CoolSculpting had pop off after 16 minutes

Its unclear what you are trying to ask but looks like there were two pop offs and each application lasted for 16 minutes, 5 minutes and 16 minutes. At our clinic we start a new application everytime there is a pop off just to make sure you get the full treatment but in your case time will tell. 

At this point, it's too early to tell what your final results will be. If you're concerned about your treatment, I recommend following up with your practitioner. For best results with Coolsculpting, I recommend a combination.  I recommend adding radiofrequency treatments like Vanquish, Venus Legacy, Exilis Ultra for skin tightening and with Z wave/Cellutone for skin smoothing. In our practice, we use a Fire and Ice treatment of Coolsculpting with Vanquish and are getting great results. VASER with ThermiRF are a great alternative. Best, Dr. Emer

Hello and thank you for your question. It's difficult to tell what happened, but it sounds like your applicators popped off twice. I recommend following up with your practitioner about your concerns over your treatment. Keep in mind, most patients elect to have a retreatment of the same area to help get the best results. All the best, Dr. Dr. Aggarwal

Once there is a pop off, the treatment should be stopped and the area should be retreated. The targeted areas should have the full 35 minutes to complete the treatment. 

As a practical matter, a Coolsculpting cycle is considered irreversibly underway after 5 minutes-so the option is to repeat the cycle or not.  While 16 minutes may give adequate treatment, ideally, the area should be treated for the full cycle.  Allergan is very responsive--and so if there is an incomplete cycle, your provider can discuss getting that incomplete cycle repeated.
Theoretically, the full treatment would be the ideal time to allow for adequate freezing of the fat tissue--and combining shorter cycles will not give the same cumulative effect as a full cycle.

Thank you for your question. If you received a "Potential loss of contact" error, during your treatment, your CoolSculpting Specialist should be able to restart the treatment in order for you to receive the full 35 min treatment. I suggest following up with your provider if you have any other questions or concerns. Best of luck!