diff --git a/scripts/boot/5g-dial.sh b/scripts/boot/5g-dial.sh
index 714670f..74ed1b2 100644
--- a/scripts/boot/5g-dial.sh
+++ b/scripts/boot/5g-dial.sh
@@ -7,38 +7,23 @@ source "${SCRIPT_DIR}/common.sh"
 
 STEP="5g-dial"
 
-disable_interfaces() {
-  local raw_list="$1"
-  local iface
-  local nmcli_available=0
+run_dial() {
+  local rc
 
-  if [[ -z "${raw_list}" ]]; then
+  export TERM="${TERM:-xterm}"
+  export LANG="${LANG:-C.UTF-8}"
+  export LC_ALL="${LC_ALL:-C.UTF-8}"
+
+  blitz_log "${STEP}" "dial-env" "start" "TERM=${TERM} LANG=${LANG} LC_ALL=${LC_ALL} interface=${BLITZ_5G_INTERFACE}" 0
+
+  if blitz_run "${STEP}" "dial" python3 rndis_dial.py --serial-port "${BLITZ_5G_SERIAL_PORT}" --interface "${BLITZ_5G_INTERFACE}"; then
     return 0
   fi
-  if command -v nmcli >/dev/null 2>&1; then
-    nmcli_available=1
-  fi
 
-  for iface in ${raw_list//,/ }; do
-    if [[ -z "${iface}" ]]; then
-      continue
-    fi
-    blitz_log "${STEP}" "disable-interface" "start" "iface=${iface}" 0
-    if [[ "${nmcli_available}" -eq 1 ]]; then
-      nmcli device disconnect "${iface}" >/dev/null 2>&1 || true
-    fi
-    if ip link show dev "${iface}" >/dev/null 2>&1; then
-      if ip link set dev "${iface}" down; then
-        blitz_log "${STEP}" "disable-interface" "success" "iface=${iface}" 0
-      else
-        rc=$?
-        blitz_log "${STEP}" "disable-interface" "failure" "iface=${iface}" "${rc}"
-        return "${rc}"
-      fi
-    else
-      blitz_log "${STEP}" "disable-interface" "success" "iface=${iface} not present, skipping" 0
-    fi
-  done
+  rc=$?
+  blitz_log "${STEP}" "dial-retry" "start" "first dial attempt failed rc=${rc}; retrying after 3s" "${rc}"
+  sleep 3
+  blitz_run "${STEP}" "dial-retry" python3 rndis_dial.py --serial-port "${BLITZ_5G_SERIAL_PORT}" --interface "${BLITZ_5G_INTERFACE}"
 }
 
 wait_for_serial() {
@@ -101,8 +86,6 @@ if [[ -z "${BLITZ_5G_INTERFACE:-}" ]]; then
   exit 1
 fi
 
-disable_interfaces "${BLITZ_5G_DISABLE_INTERFACES:-}"
-
 route_output="$(blitz_route_ready "${BLITZ_TIME_SERVER_IP}" "${BLITZ_5G_INTERFACE}" || true)"
 if [[ -n "${route_output}" ]]; then
   blitz_log "${STEP}" "dial" "already_up" "target_ip=${BLITZ_TIME_SERVER_IP} interface=${BLITZ_5G_INTERFACE} route=${route_output}" 0
@@ -112,7 +95,7 @@ fi
 wait_for_serial "${BLITZ_5G_SERIAL_PORT}" "${BLITZ_5G_SERIAL_WAIT_SEC}"
 
 pushd "${BLITZ_5G_DIAL_DIR}" >/dev/null
-blitz_run "${STEP}" "dial" python3 rndis_dial.py --serial-port "${BLITZ_5G_SERIAL_PORT}" --interface "${BLITZ_5G_INTERFACE}"
+run_dial
 popd >/dev/null
 
 wait_for_route "${BLITZ_TIME_SERVER_IP}" "${BLITZ_5G_ROUTE_WAIT_SEC}" "${BLITZ_5G_INTERFACE}"
diff --git a/scripts/boot/common.sh b/scripts/boot/common.sh
index 8caef70..29a70e0 100644
--- a/scripts/boot/common.sh
+++ b/scripts/boot/common.sh
@@ -55,7 +55,6 @@ blitz_load_boot_env() {
   export BLITZ_5G_DIAL_DIR="${BLITZ_5G_DIAL_DIR:-/home/nvidia/5g-test/5G}"
   export BLITZ_5G_SERIAL_PORT="${BLITZ_5G_SERIAL_PORT:-/dev/ttyUSB7}"
   export BLITZ_5G_INTERFACE="${BLITZ_5G_INTERFACE:-eth0}"
-  export BLITZ_5G_DISABLE_INTERFACES="${BLITZ_5G_DISABLE_INTERFACES:-}"
   export BLITZ_5G_SERIAL_WAIT_SEC="${BLITZ_5G_SERIAL_WAIT_SEC:-60}"
   export BLITZ_5G_ROUTE_WAIT_SEC="${BLITZ_5G_ROUTE_WAIT_SEC:-30}"
   export BLITZ_TIME_SERVER_IP="${BLITZ_TIME_SERVER_IP:-${default_time_server}}"
diff --git a/scripts/boot/robot-boot.env b/scripts/boot/robot-boot.env
index b23d0c1..289d6ff 100644
--- a/scripts/boot/robot-boot.env
+++ b/scripts/boot/robot-boot.env
@@ -1,13 +1,12 @@
 # Boot-time settings for the robot-side autostart chain.
 # Override machine-specific values in robot-boot.env.local.
 
-BLITZ_BOOT_DELAY_SEC="30"
+BLITZ_BOOT_DELAY_SEC="60"
 BLITZ_LOG_FILE="/var/log/blitz-robot/startup.log"
 
 BLITZ_5G_DIAL_DIR="/home/nvidia/5g-test/5G"
 BLITZ_5G_SERIAL_PORT="/dev/ttyUSB7"
 BLITZ_5G_INTERFACE="eth0"
-BLITZ_5G_DISABLE_INTERFACES="eno3"
 BLITZ_5G_SERIAL_WAIT_SEC="60"
 BLITZ_5G_ROUTE_WAIT_SEC="30"
 
diff --git a/scripts/boot/systemd/blitz-b-side-omnid.service.in b/scripts/boot/systemd/blitz-b-side-omnid.service.in
index 93d3502..2269ace 100644
--- a/scripts/boot/systemd/blitz-b-side-omnid.service.in
+++ b/scripts/boot/systemd/blitz-b-side-omnid.service.in
@@ -1,7 +1,7 @@
 [Unit]
 Description=Blitz robot b-side omnid
 After=blitz-time-sync.service blitz-ros-receiver.service
-Requires=blitz-time-sync.service blitz-ros-receiver.service
+Wants=blitz-time-sync.service blitz-ros-receiver.service
 
 [Service]
 Type=simple
diff --git a/scripts/boot/systemd/blitz-ros-receiver.service.in b/scripts/boot/systemd/blitz-ros-receiver.service.in
index 317121b..fbafd6c 100644
--- a/scripts/boot/systemd/blitz-ros-receiver.service.in
+++ b/scripts/boot/systemd/blitz-ros-receiver.service.in
@@ -1,7 +1,7 @@
 [Unit]
 Description=Blitz robot ROS receiver
 After=blitz-time-sync.service
-Requires=blitz-time-sync.service
+Wants=blitz-time-sync.service
 
 [Service]
 Type=simple
diff --git a/scripts/boot/systemd/blitz-time-sync.service.in b/scripts/boot/systemd/blitz-time-sync.service.in
index 3f87363..36fd79b 100644
--- a/scripts/boot/systemd/blitz-time-sync.service.in
+++ b/scripts/boot/systemd/blitz-time-sync.service.in
@@ -1,7 +1,7 @@
 [Unit]
 Description=Blitz robot private chrony sync
 After=blitz-5g-dial.service
-Requires=blitz-5g-dial.service
+Wants=blitz-5g-dial.service
 
 [Service]
 Type=oneshot