Signal interference between Pepwave and WeBoost

I’m trying to understand if there will be interference between two systems.

I live full time in an RV and I do some work on the road. I have a Pepwave MAX BR1 MK2 in side the RV and a Poynting 5-in-1 MIMO antenna on the roof.

Although most of the time this arrangement works fine, sometimes neither the cell signal from the tower nor the WiFi signal from the Pepwave is strong enough to make a phone call without dropping the connection several times.

I would like to add a cell booster and I was looking at the WeBoost https://www.weboost.com/products/drive-reach-rv?variant=32818884182113&currency=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&gclid=EAIaIQobChMI8rKFw_fF7QIVQIFaBR2fcw8jEAQYBCABEgKqwPD_BwE

Questions:

  1. Can I mount the WeBoost next to the Pepwave?
  2. Can I mount the WeBoost antenna within 12 inches of the Poynting MIMO antenna?
  3. Will there be any feedback oscillation between the two systems?

Thank you for your help.