Key details I never hear people talk about

I've just seen this video, which to me is the best summary of the case I've seen that has some details I wasn't aware of before that seem potentially quite big: https://youtu.be/A6vYOJSMLvg?is=ZyEmn0g1me-9SyWG

Firstly, apparently Brian was trying to meet other friends that night while out with Clint and Meredith, which is why Meredith drove them back to the ugly tuna, to meet these people.

This could potentially explain why Brian didn't try to find Clint and Meredith again, because he ran into these other friends after the two girls he was speaking to left.

Does anyone know who these friends were or if they were interviewed by police? What's more, according to the video, there were around 30 patrons at the ugly tuna who left via alternative exits, ie not via the escalator. So, could that have included these friends Brian was trying to meet?

And finally, the footage showing the person who looks an awful lot like Brian leaving via the escalator seems like it should be talked about more no?