More than a decade ago, there was a DOS program that did this called IZE. The way it worked was this. You started a hyperlink operation. It placed a starting marker in the current item. You then opened the destination item and ended the operation, whereupon IZE placed a similar marker in the destination item.
Clicking on the marker shuttled you back and forth between the items.
So - logical links gets you close. And as I think about it, it may even be an improvement given the additional complexity that URP3 has over IZE.
I may have to (buy I'm not yet ready to) withdraw my request in this regard. I have to have a little think...
Regards,
Bal