Fan frames aren't touching together, the lower fan cable is just slightly touching the upper fan case and there is slight vibration noise - only noticeable if you lean closer to the PC case.
I've recently added 3 new fans, deep cleaned PC and replaced thermal. Had to reposition old fans to connect them better and my former exhaust fan became my lowermost front intake fan. It had a very tightly bound supply cable and I didn't want to risk damaging it, so for it connect, the cable is on the upper frame side between two fan walls. Overall the cable placement is otherwise quite solid. Temps are the lowest they'd ever been.
I had to open my PC quite a few times to reposition some cables, tighten a few loose screws, rotate a fan by 90 degrees, and I've frankly have had enough of disconnecting cables, opening cases and tinkering with the inside xD
Is there any danger in leaving that one fan cable like that? Could it maybe, dunno, catch fire or something? Or could that slight vibration lead to damaged fan bearings?
