I agree that the VNA forum (and the spectrum analyser forum) is a good place for info. It's the EDA forums that seem to be lacking IMO.
In the link below even Dr Joel ended up in a muddle on the ADS (EDA) forum a few days ago. The dates and order of posting is a mess and he ended up replying to a 13 year old request. Dr Joel even comments about the qty of 13 year old posts on the forum.
Ironically, it's a thread question about the 'new forums' but this was when the Agilent forums were new 13 years ago!
https://community.keysight.com/thread/6140The link above represents the confusion caused by the new forum layout and the date bug. The oldest posts are being shown with highest priority and not the other way around. So even the ADS forum is messed up at the moment...
It looks like the tab for selecting 'oldest' and 'newest' activity is back to front in the forum code. Either that, or the oldest posts were the last/latest to be activated into the new format. So they appear first? Try making sense of that thread I linked to. Unless you are aware of the nature of the date bug the flow of that old/new thread is a confusing mess at the moment.