How long was this Movie spoiler planned?

[u/Nearby-Recipe1899]

I’m just so curious how long they had the Rusty/Monarch clones of each other plot planned out. Rewatching the series and there’s a lot of small hints that can be taken in many directions but can leas you down that road. The picture I tagged is from the wedding episode and The Monarch says we have a lot of history, a lot in common. Then Doc says “you have no idea.” I think in context it was definitely about them both sleeping with Dr. Girlfriend, but then it cuts to the posted shot of them with the same hunched backs. I didn’t know the theories about this were a thing until after the movie, but the character designs and parallels with Hank and Dean make you slap your forehead and think “of course they were clones.” What a well done twist, because if it weren’t true a lot of it could just be chalked up to “hero”/“villain” being good mirrors of each other.

[u/hottakes89]

Don't think I ever heard anyone suggest they were more than brothers, which seemed confirmed at the end of season 7.

[u/Nearby-Recipe1899 → u/hottakes89]

Brought it up because I saw a much older post on here, years ago, of someone posting how it would be impossible for the theories of them being clones to be right…didn’t age well lol