It isn’t just the ankle and hip it is the whole system.
Banded distractions are one aspect of the system.
What about the other aspects?
There is a piece which is missing where things revert back.
Tacked down sliding surfaces need attention.
Here are some episodes which show the technique.
Episode 25: Heel Cords of a Cheetah, Achilles Well Being (3:40 mark)
Episode 85: Unglue Your Sticks Man (3:34 mark)
Episode 115: Lower Leg Sliding Surfaces (2:20 mark)
Episode 167: Unglue That Heel Cord (1:48 mark)
Episode 220: Lower Leg Business (2:19 mark)
Episode 285: Sliding Surfaces; Ankle Range of Motion Case Study Part 1
Episode 293: Haiku Winner, Travel Ideas, And Your Feet (4:27 mark)

Have you looked at trunk organization?
If things are not set here there can be downstream implications.
Torque and Trunk Stability Part 1: How to Stand
Pro Episode # 21 – Pro-User Request Friday: Not Seeing The Change? You Need a Systems Approach.

Episode 52: Up Against the Wall, Snatch Prep and Nerve Gliding Too!
Episode 234: Improve Your Proximal Hip Mobility and Nerve Tunnels

Do you have full hip flexion?
Do your feet turn out when you squat?