You are being mislead by the event viewer and are assuming that, just because you see Couatl crashed, it was the cause of your MSFS crash, but it's not.
The couatl engine, as an .EXE, doesn't have ANY access to the Flightsimulator.exe process, meaning it cannot possibly cause a crash. This is granted by the OS at the lowest level, and programs that don't attach to a process like debuggers ( and Couatl surely doesn't ) and/or are not lower level services or drivers, simply cannot crash other apps.
On the other hand, when Flight simulator crashes for any other reason, it will abruptly disconnect its communication with the Couatl program, which is waiting for a proper "quit" command ( which hasn't arrived, because the sim crashed ), to exit cleanly.
So, what really happened here, is that MSFS crashed for another completely unrelated reason, and it MADE Couatl crash too, because of the unexpected disconnection, and you are being mislead assuming Couatl has something to do with it, because you are seeing it referenced in the event viewer.
The timestamps of the events in the event log you posted confirm this:
FlightSimulator.exe:
2023-03-23T04:41:00.9138211Z
FlightSimulator.exe:
2023-03-23T04:41:01.9928551Z
Couatl64_MSFS.exe
2023-03-23T04:41:26.2681661Z
As you can see from the times, FlightSimulator.exe crashed FIRST, and it MADE Couatl crash too, 25 SECONDS LATER, which is exactly what would happen if the sim closed the communication abruptly with it (because it crash), instead of sending the proper closing signal it normally sends to all connected clients, to alert to close themselves too, so the can do any required memory clean up on closing.
