Sony SLV-AV100UX - Manual (Page 43)

43 Basic VCR Operations
When the timer settings overlap
The programme that starts first has priority and the second programme
starts recording only after the first programme has finished. If the
programmes start at the same time, the programme listed first in the
menu has priority.
Programme 1
Programme 2
Programme 1
Programme 2
20 seconds will be cut off
20 Seconds
Will be cut off