Immediately after the crash, the FIA launched an investigation, but for everyone who witnessed the crash, it is quite clear what happened: Hubert got off track, and bounced back via the boarding at the top of Raidillon. Here he was rammed in the side by Correa, who had nowhere to go. In other words: Hubert probably would have survived if he had gotten stuck in the boarding, just as was the case with Magnussen when he crashed at the top of the bend in 2016.
This is recognized by the parties involved: circuit director Nathalie Maillet has informed Belgian press reporters that gravel is being deposited at Eau Rouge / Raidillon, where asphalt run-offs are currently still in place. The layout of the bend itself is not up for discussion, just as you are not going to repaint the Mona Lisa. A few months ago the plan was launched to make Spa suitable for motorcycle racing, for which stricter requirements apply. Car racing benefits from this.
Maillet: "The circuit has always worked with the FIA to improve safety, and now we have to wait for the report to analyze the exact causes of the accident. [..] Work is planned in Raidillon for the 24 Heures Motos , which will take place in 2022. [...] It is certain that we will once again place gravel traps. The current discussion focuses on their exact location and depth, and whether or not they should cover the length of the entire bend."
In the meantime, Juan-Manuel Correa remains hospitalised, and has been given the deeply saddening news of what happened on Saturday. Something you wouldn't wish upon your worst enemy. Hubert's BWT F2 team will start the next race in Monza with only one car, Correa is forced to sit out the rest of the season (three races), due to his injuries.