I am not sure whether it has been confirmed that Egypt Air had subscribed to the transmission of ACARS via Satcom? If they did there may be additional Satcom data that has not yet been released.
If the airline paid for SATCOM service for their ACARS, the VHF link would more than likely not have been active.
FMC's/FMS' can setup transmission to default to VHF when over or near land, then switch to the more expensive SATCOM service (or to a lesser extent, HF) only when out of range of a VHF ground station.