in your network scenario the routers' interfaces are connected to the ethernet port of the radio link transceiver so physical layer (OSI 1) is always up/up as the true ethernet neighbor is the the radio link transceiver.
To understand if there are connectivity issues on the radio link that may affect the state of OSPF adjacency you can use the following show command
show ip ospf neighbor detail
that provides the OSPF adjacency uptime so you can see what is happening.
if you see that OSPF flaps you can further check with
debug ip ospf adj
to see activity on routers
I have no clue about your note about dead interval stucked for some time in show ip ospf neighbor output, However, you need to check OSPF neighborship uptime at first.
if OSPF flaps on the radio link from time to time you should consider adding an ICMP probe to check the link.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...