Sony SLV-D910B - Manual (Page 58)

58 Checking/changing/cancelling timer settings
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.
about 20 seconds
will be cut off
Programme 1
Programme 2
about 20 seconds will be cut off
Programme 1
Programme 2