I'm in this situation now and it's not bad. It's really important for everyone to have a nothing-personal policy about being like "Hey, this is my area and not yours, let me take over." (And it goes both ways).

It does lead to a lot of "Black Triangle" [0] situations though. Where you spend a long time with no "real" actionable results to show management, and then after an annoyingly long amount of time present what looks like an insignificant joke to a non-programmer.

[0] https://rampantgames.com/blog/?p=7745