Bondu,
Yes they did and the results are being analysed at this time; there was extensive prep before the interviews were conducted, part of which was to utilise experienced staff (not necessarily management) from the three operators to set up the interviews.
The interviewer was an MSc student from Cranfield University who intended to use the results for his final dissertation - he is an ex-Brazilian naval pilot. the CAA maintained oversight of the project which was, essentially, a risk assessment of the visual segment of the procedure.
The results will not correlate exactly with the CAA research work which is primarily concerned with the proposed SBAS Point in Space procedure -that being an offset procedure where the current ARA is a divergent procedure. The essential difference between the two (at least the point of the DR or MAPt - i.e. where the visual segment begins) is the amount of manoeuvring required to put the aircraft on a track to where the landing manoeuvre takes place. It is less with the divergent procedure.
All questions will have been with respect to the existing procedure; notwithstanding that, the principles are still the same and apply equally to both procedures.
Jim