Help Identifying Nikon FE2 Problem

Bulk loaded upside down?

Bad processing for sure, like they mixed up chemicals.

Opened the door accidentally?

Well, the lab didn't make the frames overlap; but the camera didn't fog between the frames, either, so there is more than one issue here. I don't know how opening the back would not have also fogged the sprockets, or how it could have also fogged the film in the cannister, so it sure seems like something happened at the lab - while at the same time the camera did not advance properly.

Very strange. Let us know what you conclude.

When I zoomed in on the negatives posted, it almost looks like a film advance issue. I see some over lapping.

Are you sure that you didn't rewind the film, leave the leader out, and then load it into the camera and expose it again?

Hey everyone, I finally got another test roll back from the lab, and everything looked great. Thanks for all your advice and sorry if it ended up being a slight waste of time. With so many issues happening at the same time it will remain a mystery as to what happened. Thanks again!