Thanks for the photos input guys. I didn't take good enough pictures of the A-pillars to see if the black out was there. I do have good photos of the inner cowl and there was no black out. I think I will black these areas to avoid any colored areas showing up.
By June 69 at Dearborn they were typically painting the top of the cowl with the engine black. On some of these later cars I've seen just extending that coverage into the windshield opening on most that I see from that year/plant or taping/mask that stopped the black just short of the defroster ducts. At least with the masked/tapped off edge it keeps the exterior color from peeping through between the dash pad and bottom of windshield
Not often great coverage when black was applied in that area (even the body color is often thin) which can be cleaned away with ease
Example with lip masked off from the black paint
Example with area blacked out
What can happen