…のも無理 (は) ない => It's natural for... N3
Evaluate
[時「とき」] => At the time A N5
Time
と同時に => at the same time as; while; simultaneously ~ N2
Vた[時「とき」] => After having done something N5
Time
のも無理もない => (to be) natural,(to be) understandable N3
Evaluate