I'm new to kbin and lemmy and still learning the ropes.

I'm new to kbin and lemmy and still learning the ropes.
I'm subscribed to https://kbin.social/m/diablo@lemmy.world and there's a 2 hour old post there, but I don't see it on https://kbin.social/sub. Is that normal?
Is /sub intended as the "home page" like it is on reddit?

#kbinMeta