Are they equal returns or is one for something else like a pressure side vac ?The picture above. It had the off pointed towards one of the returns.
Looking at your previous pics I also want to make sure you have the suction side at 90% skimmers and 10% drains. (Or there abouts). The SLAM process doesn't care either way but more skimming will help the onslaught of pollen right now. And in general after that.