Little confused about the scope of a static variable here. I have 2 scenarios:

• Two recursive trigger methods A and B in the same transaction - Does it mean will I need two static variables a and b to apply the recursion control for each one? And if this is true, does this mean I will need , e.g. 6 static variables doing the same thing to control 6 recursive methods in a single transaction? 😮
• How does this scenario differ when I rather have 2 users instantiating the same transaction at the same time?

I went through the SF documentation and I couldn't get a clear idea on this. Any help on this would be greatly appreciated.