Brilliant. This is what I think it's often all about. Distraction from anything which might cause distress, even if it means talking about something ridiculous for most of the time.
If it's not possible to have a logical, meaningful conversation with your loved one then I'd much rather have a good-humoured nonsensical one. Better than no communication or a load more stress and upset.
Logical, meaningful conversation - what's that? I didn't have one of those for nearly two years with my husband but a lot of "fun" conversations about a variety of subjects that normally wouldn't have crossed my mind. Now I look back and I am able to smile when I remember how I used to scratch my brain for a reasonable answer to some of the weird imaginations posed by my man. The hard answers were to queries regarding houses, cars, old friends and parents. I wish you well.