Tethered shoot, in middle of shooting starts saving files as JPG's instead of RAW - Canon R5, MacBook Pro M2 Max

I'm editing a shoot that was shot tethered and in the middle of a setup, the files are being recorded as jpg's instead of RAWs! 

Shooting solo, no assistant or DT, just me and subject, lifestyle people photography at an artist studio. Canon R5, Tether Tools cable, connected to 2023 16" MacBook Pro M2 Max - loaded. Ventura 13.5, C1 23 Pro, 16.2.3.32. I was having some issues with losing connection during the shoot (I need to buy an Area 51 cable), but, from the metadata, there were 19 seconds between the last shot captured as a RAW and the first shot captured as JPG. To me, that indicates that, if there was a gap in shooting, there was maybe enough time to unplug the tether cable and switch the camera off and back on again, but not to do a C1 restart or really mess with the Tether setting's in C1 and accidentally switch the Capture Type from RAW to JPG. Additionally, the minimal change in the subjects pose also indicates there was minimal "fussing" with the computer or camera in those 19 seconds.

For those familiar with the Canon R5, I often shoot straight to card and even when shooting tethered and on tripod, I'll often go off tripod and untether (especially if shooting without an assistant or DT to manage cables and laptop) and shoot to card. That means even when shooting tethered I've got the following setup in camera (when tethered, files only being recorded to computer).  I'm shooting RAW's to the CF Express card and large Jpgs to the SD card as backup. In the camera menu, in the Wrench setting, I have Record func+card/folder sel. to record photos separately (I can get into more detail on that if it's something that could be an issue here). In the past I didn't shoot a backup to the SD slot as I don't like the fact it can slow the camera down and I shoot fast moving lifestyle, but after an assistant nagged me about it, I recently started recording a backup. 

Anyone else had this issue?

Thoughts on what might have happened?

How to prevent this from happening again?

Thanks!