I don’t know the “known” zechus, but in the Shul I daven in, for the past 4 (maybe even 5-7) years, the bochur who got Chosson Berashis, all got engaged that year B”H!
This past year’s bochur, we thought it didn’t “work”, but on Shmini Atzeres, we found out he got engaged before Yom Tov!