Good news fellas, after almost 5 month of having AA not working with my trusty Nexus 6 the "final solution" presented itself. As it turns out , my N6 was stuck at Android 7.0.0 presumably from the Nougat beta program from early 2017. Google eventually released a 7.1.1 update with latest one...
Were you able to resolve the issue? I'm having the same problems between 2016 civic and nexus 6 ever since the AA was updated around 3 weeks ago. Will have to wait for the Google to fix the problem as reverting back to the previous version of AA using third party APK 'mirrors' is a bad idea due...