Ok, I have read it again
Still doesn't pass with me
Pilot loads pax, hops in, puts bat/pumps on then briefs paxs from his seat position for a few minutes - does this include the rear paxs including 2 brace positions, emergency exits, rear door opening, belts, vents ect
Maybe he just briefs the front seat pax separately for a few minutes having previously briefed the rest.
I'm being picky but in all the years I flew both types I don't remember starting to be much of an issue