One is "overflow" from trans main pump, IOW That is bleed/bypass oil output from "pressure regulator"
Other just drains to sump.
Not much pressure on coolant lines.
I had a TSB that said which port is out and in on several trans types but I can find it right now.
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)