Short cut keys to select a master pg text frame below a non MS text frame?
-------- Shortcuts below

Select master page item from document page

Selection or Direct Selection tool+Ctrl+Shift–click

Selection or Direct Selection tool+ Command+Shift–click

Select next object behind or in front

Selection tool+Ctrl–click, or Selection tool+Alt+Ctrl–click

Selection tool+Command–click or Selection tool+Option+ Command–click
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