Hello Edson,
I Guess you want the data, not the function exactly. In analytics it isn't automatic, you'll gotta need download a base from ad hoc or warehouse.
You can use this template:
1. Dimension: Customer Id or Marketing Cloud Id
1.1 Breakdown by hour or minute
1.1.1 Breakdown by channel
2. Metrics: visits and whatever others that are you website objetive.
That you can study this base and know how much channels your customers take before the conversion.