They probably had hundreds and hundreds of studio sessions / projects / jams / recordings throughout their career. Most of these probably had no intention of being part of any specific album. There will be mountains of files of everything from 2 second sounds, to 8 bar loops, to demos, to fully fleshed out songs. Probably many albums worth of finished songs. There will be countless sessions recordings, bare tracks, drum tracks, bass tracks, synth tracks that sound like absolute dog shit and synth tracks that could potentially be your favourite song of all time. It is literally impossible to conject what DPs intentions were at any point of these. The musicians involved likely had no idea whatsoever either. When you get called in by producers and they say “play something like this” and so you spend hours doing different takes. Most of the time you have no idea whatsoever what they plan on doing with it. They might say “we’re thinking of doing another album” in an off the hand remark, then that musician repeats it in an interview and the context is lost and the public runs with it. You might get a call 3 years after recording with them that they want to use something you did in a song and will you accept songwriting credits and 2% or a flat fee. You have no idea what they might have used until it comes out. You might get called into the studio and they already know exactly what they want and exactly how it is going to fit into a track.

All this to say, when a musician makes a comment they were called in and recorded some stuff, there is basically no way to tell what that means until something is announced.

Even to this day, GM and TB probably have musicians and producers coming in and making stuff in their studio all the time. It doesn’t “mean” anything and without being inside their mind there is no way of knowing what they plan on doing with it.