I don’t think that’s technically correct - the system schedules user slots on a 15s interval:
"SpaceX also provides customers with their own phased-array terminal to be deployed at their service location to connect directly to the satellite’s Ku- band RF beam. assigned to the user’s service area. Because the Starlink satellites are constantly moving, the network plans these connections on 15 second intervals, continuously re-generating and publishing a schedule of connections to the satellite fleet and handing off connections between satellites."
“The ability to control hand-offs in software with millisecond precision allows SpaceX to turn the constant motion of the constellation into a key advantage for the Starlink network. These micro-adjustments enhance Starlink’s reliability and enables more efficient management of capacity in real time.”
My assumption is the connection switching is make-after-break, meaning there will be some delay in switching satellites, which seems to cause a brief increase in loss and buffering.