Hello. I didn't expect a response so soon, thank you.
The rendition of Hoch Heidecksburg on the So Klingt Marschmusik Vinyl/LP you linked me to appears to be 2.40 long, whereas the one on the YouTube video is 3.25 long, so I'm not too sure.
I've been listing and collecting German marching music for years, so it's nice to know I'm not alone with my passion for it, ha. :)
Check this link , also on Discogs. An LP from the 70s the version of Hoch Heidecksburg is of a similar playing time but the conductor and band are different.
https://www.discogs.com/Heeresmusikkorps-10-Melodienzauber/release/9994137