HP5+ in Rollei Supergrain 1:15. Shot on Rolleiflex.

I’ve shot several rolls over the years with a similar process, this time the roll was likely a bit jammed from the get go and stayed in the camera for a bit too long (8 months at least).

The lack of contrast was expected, the underexposed frames are a bit of a surprise, but the main issue I’m having with this is the highlighted area, I’ve never experienced this before.

I’m thinking that the roll didn’t load on the spiral properly and so the developer couldn’t access that part of the film, can anyone confirm or give me more insights?