Just did the recording on the same cassette, same DCC175, using DCC-Studio.
Side A got to 31:30 when the direction flipped mid song. The remaining tape was approx. 70 cm, so that would be around 15 seconds early.
I would say that qualifies roughly as the same as the previous test.
Side B got to 62:24 this time when it reached the leader tape.
Hope this helps somehow.
-Philip.