I’ve nothing to add, other than they both sound like ponces
Distinctly different to my ear.
The first is what I would call generic Oxbridge, though I would guess he grew up somewhere in London/the southeast.
The second has a couple of Oxbridge-esque lines near the beginning (‘you quickly notice’ etc), but mostly sounds like someone from the north of England (East Yorkshire maybe?) that’s lived in the southeast for a good few years and had the edges knocked off.
This was my take as well. 1 is more classic home counties. 2 is very neutral and I think you’re right about the northern background. “We come up with all these fancy frameworks” is the bit where it’s most apparent
There are some very minor differences, but they’re broadly similar. 2 has a few things like dropping the “f” sound from “of” and using a “v” sound for the last consonant of “with” which I would guess are tinges of a London accent
