ok, you have to right click on him.
For what it's worth, I always jump into Tactical Cam mode and survey enemy levels that way. It's a simple matter of moving the cursor over them, and because time is stopped, there's no risk of them getting agitated by your presence.
Alright guys, it's confirmed. Party banter, and player cued random banter, is bugged for a large number of people.
Apparently, if you're like me and have wandered about a lot, only to have it silent most of the time, the reality is that party members should be talking quite a bit.
And as I mentioned above, there should be moments where, as part of some banter, a prompt comes up that lets you respond to question. I think this happens once if you're exploring in the prologue. It has not happened for me again since then.
Interesting. My party members chat among themselves pretty frequently, but I've seen exactly one "Speak Up" prompt for my own character and it was in response to a solved side quest. Never saw it once during the prologue, and believe me: I went through it enough times to know.
If you hadn't mentioned it, I'd have never known it was missing. I hope the regular party banter doesn't glitch out too -- I've really enjoyed some of their exchanges.