A few vehicle service agreement (VSA / Extended Warranty Questions)

Few quick questions:

1. If I purchase a used toyota within the 3 year, 36,000 miles from a NON-TOYOTA Dealership, can I still purchase the VSA from any dealer in the country (such as here)?

2. If I purchase a used toyota that is say 6 years old, with 60,000 miles, are there any Toyota brand VSAs available? Does this answer differ whether it's from a Toyota dealership or a 3rd party dealership, and do I have to purchase at the same time as purchasing the used vehicle?

3. "5 year/100k" means 5 years from when the vehicle was first purchased, correct? Not 5 years after the 3 year factory warranty expired?


Thanks!