been there - I had my trans and cooler flushed twice less than 2 hours after it happened with a dealer machine.
I then changed the fluid and filter 3 more times in the first week to try and save the trans.
Took about a year and the clutches in the trans eventually delaminated, plugged the return line and fried a bunch of stuff including the rear cluster when it overheated
rebuild the trans, new mopar converter, and new cooler - I would not try to flush and reuse the originals - I did the first time and it cost me another trans rebuild and converter.
I also installed a external cooler