In addition to the connections made by the system itself, you should be aware that some google trackers inside apps are currently not yet blocked by Advanced Privacy (see this ticket on the bug tracker) and thus may show up on your router log.
If you want to block these connections as well, you may want to take additional measures such as using an app like Tracker Control or No Root Firewall. Running them on top of Advanced Privacy is possible since AP filters on the DNS level.
The log feature in these apps will also give you a better indication which components of the system connections originate from.
With regards to the Qualcomm issue, Gael released a statement in this thread.