Observing carefully, this drill series, as presented, can be noted as being in good part Mak Sifu's own compilation, because while there are
Hung Ga and
Ye Fu Chut Lam partnered
Dyun Kiu/ Short Bridge actions, distinctly included are also
Tai Gik and
Wing Chun Kyun technique.
Decent practice, as it's good to understand and mesh with all foundations, gaining refinement in one's skills as well.
However, should give Mak Sifu some credit here also, not simply assuming this to be an orthodox Wong Lei training method in total.

Best,
Michael