One hell of a pull. I hope to see double rainbow one day myself.

Anyway - Was doing the daily quest Gacha - got Forget Me not chan (4*) and decided to give it a go.
All bronze and one Swimsuit Cattleya 5*.

So yeah just another coin to weigh on the "Get a silver / 3 Bronze in a pull from Normal gacha and immediately do a normal Gacha before leaving the Gacha screen" scale. Just to let you guys know.
If this happens more often we might be able to validate this theory maybe.