In the log I see a timer.
Here is an example from right now:
[GameplayScene_MAIN_ACTION] The next concede delay was rolled to be 18869 [15000 - 30000].
[GameplayScene_MAIN_ACTION] We need to wait 18869 ms still before we can concede.
[GameplayScene_MAIN_ACTION_Friendly] Waiting to be in this state longer.
[GameplayScene_MAIN_ACTION] We need to wait 18833 ms still before we can concede.
[GameplayScene_MAIN_ACTION_Friendly] Waiting to be in this state longer.
[GameplayScene_MAIN_ACTION] We need to wait 18801 ms still before we can concede.
[GameplayScene_MAIN_ACTION_Friendly] Waiting to be in this state longer.
It keeps going till the countdown runs out.
Clearly somewhere it is programmed to roll a random number with values of 15000 and 30000 and wait that long.