The setup uses a roundabout to circle packs that doesn't get divided to a chest on first try and I'm not sure my belt-fu is strong enough to have managed it well. Also the unbuild blue/purple science is not going to help the belt-fu, so I was hoping someone could suggest how to make it pretty.
Don't have blueprint tech unlocked, but the concept is from madzuris_smart_loading_train_station_guide on redit, with the two deciders simply saying if the chest contains more than 250 total items, stop working so hard.
1: Efficiency is king! True king's is kinda obsolete in this day and age, but it should make my research complete 0.00003542% faster.
2: I wonder if 13.0 allows this to all be one chest.
3: All list should have at least 3 points, so this is the third.