Ah that makes sense.

Not really true in newer models. The Tesla charger was adopted as the North American Charging System (NACS.) Pretty much every new EV made in the last 2 years uses it, and all of them will moving forward.

I have also had this issue. Sometimes I have just used Audacity to stitch them all together into one file. Not the most elegant solution but it will get you by if you can’t find a single file.