1) The calendars are synched within minutes if not instantly. I get a booking on Airbnb and it shows on the Homeaway calendar within minutes.
2) ALL blocked dates on your Airbnb calendar are synched to Homeaway.
a) bookings - yes, it shows as unavailable on the Homeaway calendar
b) Pending bookings don't show up
c) I have not noticed inquiries pushing anything through to the Homeaway calendar
3) Yes, I show the guest name and booking confirmation for reservations, and for Airbnb calendar blocks, it shows whatever notation I've made on that block (for example - hold for sister)
I hope that helps.