Some captain's have very little interest in what goes on behind them at anytime and wouldnt trouble themselves to make a useful PA.
the Captain's I have flown with as CC on public transport and presumably those as SLF as well have a great deal of interest in what goes on all around
them Pull what.
In the queue behind your seat as pax is another aircraft on approach. Go around decisions are never made lightly.
The PA that could be made may well take only 20 seconds.......in that time the PF could have put that plane into the side of a mountain because the other guy is distracted talking to you.
I know what I would rather the guys at the pointy end are doing at that point......
My PA as a CC takes a bit longer than 20 seconds. I use our standard but also tailor it based on what I see re reactions around me and what if anything I know at that point.
I've never known anyone not be reassured by this.