If you think about lead-ins, the fact the 10PM news on 29 has been around for decades, etc., that should be happening anyway--that spot is designed more to try and annoy 6 than anything.
It'd be news if the 10PM on 17 was beating FOX regularly--and for a bit, there were some days where they were and it was competitive.
It'd also be news if the 10PM news on FOX was the market's #1 late news or close to it, or if GDP were making inroads again in the morning. There hasn't been any newspaper coverage on how May sweeps were for Philly. I guess it's safe to assume the status quo?