Accessing Controls in Nested Master

[Guest]

Are controls inside a nested master accessible? I have a master (b) which
references another master (A). In master (b) I has several ASP controls. On
the Page_Load of master (b), I can't seem to reference those ASP controls.
In the debugger, it shows that master (b) only contains 1 control in the
Controls collection and that single control is a reference to master (a)!
The debugger also shows the ASP controls as members of master (b), but I
can't seem to reference them through reflection either.

Can anyone explain?