Gati are not a form of vipaka vedana. But certainly, gati can influence what kind of vipaka vedana can materialize (or prevented).
Gati are habits/character qualities.
Your reference to “Annantara and Samanantara Paccaya” post is exactly right.
– Past kamma are waiting for the right conditions to bring vipaka.
– By acting wisely, one can avoid bad vipaka and also make it likely for good vipaka to happen.
– In the same way, if one is living foolishly, one can (without even knowing) setup conditions for bad past kamma to bring vipaka, and avoid receiving good kamma vipaka.
If one is eating junk food and not exercising, those are bad habits. They can make one get sick often. And the opposite lifestyle will avoid getting sick, injured etc.
If one is an alcoholic/drug addict, those are bad gati and can help set up conditions to get sick, get into fights, lose one’s job, etc.
– If one cultivates gati to engage in meritorious deeds, one is setting up conditions for good vipaka to materialize.
There are many ways to contemplate this.
– Of course, following the Noble Path is the guaranteed way to get rid of bad gati and to cultivate good gati.