Isn't it possible for creators to release on YouTube some time after the Nebula release?

I know of a couple channels that do that, though it seems like there's a requirement to add a little extra bit on the end for the Nebula side.

I’ve seen both “Nebula first, YouTube later” and “bonus/longer content on Nebula only” as a common pattern.

Examples: Adam Neely, Tom Scott

Jet Lag videos release on YT one week after they premiere on Nebula.