For XMM AO-6, there were no proposals submitted "on behalf of the LAT Collaboration"
There were proposals closely related to LAT work, some of which involve LAT scientists:
- J. Ballet, RX J1713.7-3946
- R. Romani, SEDs of High-z Blazars
- N. Webb, Pulsar Timing
- G. Tagliaferri, Flaring Blazars
...