Is it possible to run in floor radiant heat zones and baseboard on the same system?

This site is for pros. Have an expert design your system.
general info:

No, you need a second boiler.

Neither. you pack a uhaul and move south out of what ever blue state you're residing in.

I would turn your boiler upside down then reconnect it. That should help do away with your question.

Yes, it is possible to run both baseboard and in-floor hydronic heating from the same boiler. However, it is important that the piping for the systems be adequately sized for the additional load, and the controls be properly setup to manage both heating systems. Additionally, each system should be paired with a separate circulator pump to ensure the system runs optimally.