Watch the Turnaround Detour online guitar lesson by Brad Carlton from Chord Studies: Jazz Turnarounds Vol. 4
We've got some new sounds in this example as well as the b5 substitution principle. Ab7/6 is the b5 sub of D7#9, and then your third finger will at as a pivot as you move to the Dbmaj7. We're using our common tone principle here again so listen closely to hear the common tones throughout. This is a really effective turnaround for an ending because it really takes you back to that I chord.