We have had this conversation before on a previous thread but I have sat through a ball lightning event once about 40 years ago over the Massif Centrale at night.
The ball appeared on the flight deck went downstairs and worked itself backwards through the cabin and exited the aircraft to the rear.
No damage was done apart from several underpant changes but I remember the dust and general crap that had been lying around for years behind the instrument panel suddenly being in suspension.
Afterwards, the loadmaster was quite adamant that he saw the ball come down underneath the wing and enter the aircraft.