Is there a way to run decoder streightaway? Without modifiying pipeline? And also without embedded channel?

[ShlomiRex]

TL;DR
I need to run HTTP decoder on a request and I then add pipeline accordingly, if the decoder succeeded or ffailed.
I am using embedded channel to run the handler without modifying my pipeline.
Is this the correct way to determine the request protocol? Note: I'll run more than 1 decoder on the request, it can be multiple protocols (3 or more).
My colleagures told me that using embedded channel will write the request twice and is not memory efficient, because of writeInbound(msg) where msg is my current buffer. Is that true?

I want to run decoder, catch if failed, then run next decoder, catch if fails, and so on.

Example code (my current solution):
https://github.com/ShlomiRex/netty-multiplex-two-protocols/blob/e83f83c3bf4643c139468406a016ecb5244fabae/src/main/java/handlers/ProtocolHandler.java#L20