The 8PM arrival time pretty much connect to all departing domestic flights early morning the next day. And since they are trying to connect again the kangaroo network, the time bodes well for connections to Sydney, Melbourne and Darwin. Although the trip back to LHR is quite of a challenge. I did see a newspaper ad about this "kangaroo network" in London but cannot somehow remember where the image was posted.
There was this plan before that PAL would eventually connect the kangaroo network with return flights from Australia connecting to LHR. I just cannot figure the how?
There was also this plan of extending flights to New Zealand. PAL has fifth freedom from Australia to New Zealand. With the current schedule, the plane would be back from Auckland for a late evening departure from Australia. That plane would arrive between 6-9am assuming they indeed fly to NZ or they could park all day long before heading back home. The old schedule and the new one fits perfectly well. So you see, they are working on the timing.
Making Sense