I found a duplicate, the whole process (mercifully) only took about an hour.
I screenshotted the first ~20 seeds and just reset until I got a duplicate. Though this only shows a duplicate starting position my experience is if you do the same placements, you get the same results.
Footage is here, duplicate at 10:30 and at the end of the video.
Given that this only took an hour it would be pretty easy to just memorize seeds and reset for them.
I have no footage unfortunately, I'll try to get some though.
One thing to note is going through 239 seeds could show nothing if there is an order to the seeds being shown. Which is kinda how it feels.
Of course this could all be a hallucination, but my plan is to screenshot the first bunch of seeds I get and reset until I maybe get a duplicate of one of them.
I think it applies to everything. A few times I got the same day 1 and completed it the exact same way I did previously. You might get different bombs if you complete days differently though.
Also, thank you! Good luck on your runs
I've been noticing lots of repeat seeds lately, (and I swear it feels like they cycle through in an order or something, I think I've recently gone through every seed and looped back around)
So, in the long term, devilition speedrunning might become nonsense.
(I just now got a PB of 7:25 on a seed I know for a fact I already completed most of)