First T did not and it never occurred to me to inquire. He frequently puts details of his life on his public social media, so I could sometimes see where he went from there, if I cared. Second T never took a vacation during the time I saw him (was less than a year), but we quite frequently talked about travel and our experiences briefly because both of us like traveling and have done quite a bit over the years. It was more me taking breaks due to travel, both on business and for pleasure, I told him about my vacations and sometimes he gave me tips when he had already been to an area I was planning. I also gave him some tips when he expressed he would like to go to some of my travel destinations. These discussions about travel often turned into quite interesting psychological talk, e.g. how we can get the most out of a vacation/trip, what types of vacations can be the most rewarding/beneficial for me and why, how o use in-advance vacation planning as motivation to get other things done etc, so it wasn't just idle chatting. Also how depression and anxiety can prevent someone from engaging in relaxed vacations and travel (I definitely experienced that).

I would have been interested in hearing how my Ts approached vacations but only if the conversation had elements of what I just said (something relevant to me); I would not be interested just to know about their lives. I also never feel worried about people's traveling - I have been surrounded by people who travel a lot in my whole adult life, so it is pretty much the normal for me. I had also done some vacations in pretty risky ways when younger and most people never expressed concerns when I shared them. With those that worried, I simply didn't share details. I imagine some Ts are aware that certain clients might worry and start imagining all sorts of things about their vacations and whether they would return the same and this is why they refuse to talk about it.