Auto state switch questions

[NekoEpisode]

(My English is not good, so if you can't understand me, im sorry. I use bing translator and AI)

MCProtocolLib automatically transitions clients to the PLAY state after login. For a BungeeCord-like proxy,
how can I intercept this automatic state transition after login completion to manually bridge the connection to a backend server?

[BytelyPlay]

I don't know about the server but I'm 99.9999999999999999% sure it's the same thing as the client (bot).
The bot would have a SessionAdapter and so should the server override packetSending and cancel the packets.

[NekoEpisode]

Will this cause packets that are normally forwarded to be intercepted?

[BytelyPlay]

If by normally forwarded you mean manually forwarded then you'll have to track that like mark all packets you manually sent and allow those and cancel the rest.

[NekoEpisode]

So i need a queue or list to solve this?