Maybe it’s a “quick” connection for his drug cocktail infusions.
reciever antenna...
I agree it for drug infusions and general pick me up infusions of B-12 and vitamins-minerals. Same as Hillary, Diane Feinstein, Pelosi get some magic juice for critical events. Infusions are very in these days and expensive. They are slow drips where you sit back in a padded arm chair for an hour plus as it drips in.