Not to say what you’re doing is wrong, whatever works best for you is the goal but…the affects or actions of these hormones/auxins are pretty much immediate. You shouldn’t have to soak the cutting for 60 seconds. It would be interesting for a side by side, do a quick dip and a 60 second soak and see if there’s any difference.
Yep, did that...1 & 15 second dips, and then compared 30, 45, 60, 90 & 120 seconds--the best for cannabis was 60 seconds (able to transplant rooting cube in grow medium the soonest). The instructions that come with the liquid concentrate suggest soaking 1-5 minutes...I am thinking "woody" type cuttings will require the 5 minute soak--which I tried for some outdoor plants and no problem--it even helped some succulents I was dividing/transplanting.
https://hormex.com/products/liquid-concentrate/
I did observe this though, the fatter the stems were the ones that soaked longer (greater than 1 minute)--and produced greater root mass...but it did not do so good with the some "skinny minis".
Also, a nice additive for "maintenance" too. Root feeding at the rate of 2.5-5ml/gallon seems to kick things up a bit.