Did I get a full treatment? Thermal event detected during upper abdomen done with a petite/small applicator.

I've had CoolSculpting done before with larger applicators, but I barely felt any suction at all with the petite/small one. It also wasn't that cold until more than 1/2 way through the procedure; the area all of the sudden turned super ice cold. Once finished (abt 35 mins) the machine read "thermal event detected", the area was barely swollen, no pain. Is that due to the smaller applicator or did I not get a full treatment, especially since it's unclear when the thermal event occurred?