SnR finally got an alpha for more recent versions and it seems like both mods have a bit of a conflict. From what I can tell, both mods are trying to do something to the crafting table, and it causes a crash on launch. (edit for clarity: game technically doesn't crash, but there's enough issues with loading it might as well have) You would think that SnR would be the cause, but based on the logs I think Connected is the mod that actually raises the error, so I'm double reporting for posterity.

Logs: https://mclo.gs/LFjmRsK

SnR alpha for convenience: https://modrinth.com/mod/create-steam-n-rails/version/1.6.10-alpha+forge-mc1.20.1

Matching report in the SnR github: Layers-of-Railways/Railway#594

This is due to SnR and Connected both registering handlers for block entities on contraptions, and since Connected is loaded after SnR in your game, the game reports that Connected is registering a duplicate handler.

I've given SnR the priority in Connected v1.1.7, but I think the best solution here is for the functionality to be added to Create directly.