Calculating Overlap

There is no difference.

The result is the same.

It’s like saying there’s a difference between 3 + 2 vs 2 + 3.

With a single pattern cam you can skip the first step.

It’s just the advertised duration - (lsa x 2).
MP 292 cam....... 292-216= 76

Comp 280 Magnum........ 280-220= 60