Alright Access/Gate server figured out, I am getting a list of lobby servers and it successfully connects into it. I figured enough packets out to get to the end of that state machine too.
Still figuring out the packets but the internal debug info does say that we have successfully logged in.
Visually nothing changes except on Daytona where what looks like a Motd screen (can anyone confirm) appears (empty) and then it says getting game list. Sadly it disconnects quickly after; probably because I am missing a ping packet.