In the recently proposed entry of Red Dragon into the Mars atmosphere, the supersonic retro-propulsion (or SRP, roughly: slowing down using thrusters while still moving against the atmosphere at supersonic speed) data collection will be extremely valuable.
But this comment got me thinking...
I am sure a huge amount of data will be collected and stored - to be broadcast later when things have settled down simply due to the volume of data collected vs bandwidth.
If for some strange reason there is an unanticipated catastrophic event, will there be at least some real-time radio broadcast of telemetry (to anywhere - Mars satellite, earth, etc.) during the SRP? If not, is it because there is a (radio) Communications Blackout due to heating and ionization or other similar phenomenon?