I have found out with the help of the forum and the supplied driver code that the BM68x sensor offer at least 3 measurement modes: forced (single), sequential, and parallel. In all of them, the gas sensor's resistance is measured at the end of a heating cycle.
Now I am wondering whether there are additional undocumented modes of operation. I would be particularly interested in a way to perform a series of fast gas measurements after a heating cycle in order to find out how the gas sensor behaves when cooling down.
Is that possible? Thank you in advance for any information or suggestions.