There are a number of frauds within the fraud here.
I think what you’re recalling are the Alpha bank “pings” to/from some e-mail spam marketing list arising in/from Trump Tower.
There were also server “logs” I believe released by Crowdstrike that purported to show links but it was proven the logs were falsified; the formats of the messages didn’t match the original source code meaning they were made up by hand rather than “logged”
This analysis looks at what “proof” has ever been proffered and realized that the only thing they have ever “shown” are some PGP (password encryption) malware that actually came from Ukraine (surprise!) - *NOT* Russia - and, besides the point, have no relevance whatsoever to DNC “hack”. The author went back and reviewed what Obama IC released + published at the time and, in hindsight + now in context, there is/was *NOTHING* there - absolutely nothing.
It’s like in attempting to prove a robbery at a grocery store, rather than show surveillance footage of the act in progress, the prosecution instead presented a flier from another store in the area to show that they had corn 3 for a dollar that week.
Now you're speaking on my level of understanding. :-D