Me neither, they may have looked as if they bolted to the chassis but the aerial connector was, as I've always remembered it to be, on a bit of paxolin or SBRP board invariably with a couple of caps and resistors.
I think that very early TV's that had a mains input transformer and they did exist then the chassis was earthed via three core cable but this would have been a very long time ago now!...
Course these days you'd be a wanting to use one of the old Russ's aerial cables, a snip at £169 for a couple of meters and for a further 15 quid you can have them pre "burnt in"!
formatting link