Is it safe to get a hydrafacial followed by fraxel laser right after in the same visit?

I would not recommend any laser treatment immediately following hydrafacial treatments.  You can wait one week in between a laser treatment and a hydrafacial and can easily alternate between the two treatments.  That would be much better.

Many thanks for your question. 
It would be best not to have both the treatments on the same day. A course of CO2 laser treatments are very effective and will reduce pore size. You could consider having Hydrafacials inbetween the CO2 laser treatments. Having  a Hydrafacial on the same day as a CO2 laser treatment may be too much for your skin to cope with and could result in delayed healing and other complications. 
Please see a certified medical practitioner and ask for their opinion before treatment. Good luck. 

They cannot be done in the same visit. More is not always better. If you're having a proven effective treatment, there is no reason to push the limit and possibly end up damaging your skin. The Dr administering the treatment will tell you what treatments at what time intervals to get you the best, safest results. It is their job to get you results, so please trust their professional suggestions.