I haven’t used the XL1 in so long I forgot what the button was called so I did a little research and found this from the DVInfo site.
https://www.dvinfo.net/canon/tips.php
The Watchdog notes:
If you’re recording time code during your shoot, you’ll always see the time code numbers running in the viewfinder, they can’t be switched off. However, you may not want the number display to go out over your cables (to a remote recording deck during a multiple-camera shoot, for instance), which they will unless you’ve remembered to bring along your XL1’s wireless remote control. Aim it at the back of the camera and press the “on screen” button. This will toggle off (or on) the display information going through the video outputs.
Rich