Tonight I borrowed DHs phone to make a call and saw the number of a female colleague in his history a lot - checked back as far as I could and he's pretty much been speaking to her for up to 40 minutes at a time almost every day. He commutes on the train and that's when these calls are. I asked him about it and he says it's just catching up and they mainly talk about work but I can't believe it's really necessary for them to speak this much. He has calls to other colleagues but they're 3, 5, 10 minutes - not 30 or 40.
I don't know much about her but know she is married too.
Is it normal to speak to someone as much as that? I don't know if I'm being silly to be annoyed but some days he must spend longer talking to her than he does to me.