I have a stay/night question that I need clarification with.

Below is my scenario:
1 room booked 3/1 - 3/4 (3 night stay)
3 rooms booked 3/2 - 3/6 (4 night stay)

Rooms are all booked in the same hotel.

Under this scenario, how many nights & stays would I accrue credit for?

How does SPG calculate the overlapping room?

Would I get 4 stays/13 nights?

Thanks!