Merge appointments from multiple forms

Hi there, I have multiple delivery forms for different things, is there a way to have all the appointments in each different form connect so that someone doesn't book on the same time as another person from another form? 

Unfortunately, each appointment field is independent from other appointment fields, regardless if on the same form or on a different one.

As such, unfortunately, there is no way to link available slots. I suggest you only have one appointment field for all your appointments if you do not wish for duplicate bookings.