Well, Nev, I conclude that you have a twisted mind (otherwise, you wouldn't be in amateur radio !
![Twisted Evil :twisted:](./images/smilies/icon_twisted.gif)
).
Twisting the TV ribbon was a (perhaps, valiant) technique to ensure some semblance of balance was maintained in the line (in terms of current in the conductors). The ribbon was often run close to walls, around roof gutters etc, using metal standoffs that had a foot on one end and ring and a bit of plastic through which the ribbon was threaded (I say this for the benefit of those who did not grow up in the 1950s-1960s). This held the ribbon about 6 inches (it was before decimalisation) away from wall/gutter/etc. It's moot as to whether it did the job.
If the ribbon feedline were unbalanced, the feedline would be susceptible to picking up stray signals . . . "noise" . . . if such signals were strong enough, or the line was grossly unbalanced.
What would happen if I put a twist in my 450 ohm open wire line from the antenna to the auto matcher?
Do the experiment and find out, then report your findings here.
The next two questions of yours are the product of your twisted mind.
Looking forward to reading the report/s of your experiment/s.
![Very Happy :D](./images/smilies/icon_biggrin.gif)