So I booked on United.com on AC metal (marketed as UA) and got AQS/AQD/AQM


What qualifies as AQS/AQD/AQM? Is it based on where I book? Is it based on who owns the plane?

Suppose I book on United.com 2 AC legs and 1 UA leg. How many AQS and AQD did I get?

Now suppose I booked same flight on aircanada.com. How many AQS and AQD did I get?