Hello Gregg, this is what I call self hypnoses, I have had this thing my whole life. My son have the same way " falling in thoughts", and now my granddaughter ,soon 2 years old,
her eyes become distant and she is lost in her thinking. My daughter in law tells me "he was supposed to do things in the house when she was outgoing back he sat at the same place,not doing anything but thinking have not registered the hours going ".
This is only when it is stress and specially lot of important things to decide and handle.
Driving the car , my brain often is surprised," am I here already ?"
Self hypnosis -

Annelise