It'd work fine among friends, we often ask for a "take your time while I get a cup of coffee" or what not after our shot. Just add a max of say 60 or 90 secs before resuming. Actually both players could go get a cup or whatever.
Among 'strangers' it could depend on how well the chat's going and clearing the pause first. Maybe request time out and an ok by the other player(s) would do it.
Could help with the "sorry, got to go, someone's at the door/ gotta take this call" quitting.