from dchall_san_antonio's Basics of Lawn Care:
Watering
Water deeply and infrequently. Deeply means at least an inch in every zone, all at once. Infrequently means monthly during the cool months and no more than weekly during the hottest part of summer. Do not spread this out and water for 10 minutes every day.

Also from dchall_san_antonio's Basics of Lawn Care:
Watering Measure the output of your sprinkler(s) with cat food or tuna cans. Time how long it takes to fill the cans. This can range from a low of 20 minutes to a high of 8 hours, so you have to find that number for your sprinklers.

Conflict:
Based on dchall_san_antonio's Basics of Lawn Care on watering - Water deeply and infrequently promotes healthy grass roots & crowds out the weeds.

vs.

My RainBird controller - which Cycle & Soak Watering system is based on their own algorithm that also has weather factoring into the equation.

Questions

I've collected the sprinkler output measurements based on 15 minute scollection per zone multiplying it by 4 to get an estimate of each sprinkler zone per 60 mins.

Fed the assumptions to Rain Bird controller & it variably waters each zone upto 15 mins per zone for 2-3 times per week & less if there is rain.

RB's algorithm is based on run-off & how much water is soaked into the ground & their output establishes what is the 'correct' rate for healthy lawn & reduced watering cost.

Rain Bird is well known supplier in the golf course industry but their Watering in increments seem contradicting to us homeowners & our deep watering philosophy no?

Would appreciate any feedback!