Anyone else find it confusing, having soak time in total time?

My wife and I were pretty freaked out by that the first time it watered, running for over 300 minutes, but more than half of that was soak time.

Looking at days with zones that get soak time, I wonder why it is both counted and why that soak time isn’t used to water other zones.

One day next week waters two zones: Back grass (Z4) and south side Shrubs (Z6), but it runs Z4 for 17, Z6 for 14, waits/soaks 30, then Z6 for 14. Why not Z6 for 14, Z4 for 17 (during the soak), then 13 later do Z6 for 14?