No, I was explaining my various endeavors to my coworker who decided to tell me he saw a tiktok that proved it impossible, they just despawn after a certain level. I watched a horse of mine do this but I just assumed it died. This paragraph actually doesn't make any sense does it, I don't think I went into detail but I was trying to lower a horse into the depths, after the hot air balloon failed I got one in a wooden box on wheels and floated it down a river to a chasm, which took like an hour, then I pushed it in and the whole thing despawned. I also spent an extensive amount of time trying to get a skeleton horse out, but I gave up after he told me that info.