Basically this guy makes gate robo gate gate and then goons + obs, no reavers. I understand this is one of the safests builds you can do in PvP. He then applies pressure as he expands.
I usually go gate gate robo or gate robo gate and then reaver expand.
I was wondering if there is a way to hard/soft counter the 3 gate obs BO that I just mentioned. Perhaps a timming window to push? Perhaps as soon as I have 2reavers+shuttle? What would be your advice against this particular build?