You’re actually the first one who has noticed that 30 second mystery between Born To Secrecy and I Of Everything (that I know of anyway), so I just felt the need to explain:

It’s not because I had hopes for IOE to be a single or anything like that, but the track is – and should feel like – an uptempo track. The “problem” however was that since BTS is at a higher bpm than IOE it resulted in IOE feeling kinda slow & sluggish when it kicked off (without the intro). So it’s simply there to “reset your brain” between the two tracks.
Anyway, the intro was planned to be at the beginning of IOE but I changed my mind at the last minute (after the artwork was done) as the intro doesn’t really contribute anything to IOE, so I decided to stick it to the end of BTS instead since it’s only really needed to bridge the two.

This was perhaps an unbelievably uninteresting read, but there you have it.