Do you know what the outcome of the first gatekeeping hearing was? These days they are doing an initial gatekeeping hearing almost as standard. Cafcass discuss with a Judge what should happen next - eg FHDRA, fact find, Section 7 etc. If you've only just had the court papers, have you had the Cafcass interviews? It sounds like the standard gatekeeping hearing, after the Cafcass interviews/report. Have you had the Cafcass interviews?
I've removed the location from your post but note that it says it's a pilot. Not sure what kind of pilot but that tends to be focusing on trying to get parents to agree more and less adversarial hearings.
So usual progress is - application. Court papers returned mentioning a gatekeeping hearing without attendance. Cafcass interviews, Cafcass report/letter sent to you (usually). Gatekeeping hearing for Cafcass to put recommendations and suggestions to Judge but Judge decides what next. Then whether it's an FHDRA or fact find possibly. Usually it goes to an FHDRA and it's then considered if a fact find is needed.
At the moment it sounds fairly standard - but not sure what the "second" gatekeeping bit is if you've only just applied.