Hello and thank you for your question. If this is the first time he has had such an event it can be a number of things. Although a seizure is on the differential, it is no the only the thing it can be. The first possibility is that it could have been a syncopal episode. Even in a seated position, patients can have a sudden drop in their blood pressure and this can lead him to suffer something like this. Another possibility is that it can be narcolepsy. Patients who suffer from this condition can have a presentation similar to this. In terms of a seizure, it is not common for an individual to start having seizures when they are in their 60s. However it can be ruled out with a simple EEG. From a neurological perspective, he should have an imaging study of his brain to rule out any structural lesion such as a stroke or tumor that can lead him to have a seizure.
He should also have a cardiac work-up to determine if an arrhythmia can make him have a syncopal episode. A cardiologist can do a test that can evaluate him for a cardiac issue.
I am more than willing to pay you for your time. I just don't want to join on a monthly basis. I will see what I can do to make that happen. Thank you for being available. I will follow up with EEG as well as cardio check.