I guess that is my question to you though. Why would that be your guess as of now? Their campaign has made every effort to conceal their contacts with Russians and blatantly lied about them. Sessions, Manafort, Flynn, Kushner, and Pence have all lied about these contacts. Why are they lying about the relationships?
Not sure if you watched any of the Brennan testimony yesterday but you should. The director if the CIA was concerned people within the Trump campaign could be compromised enough to ask the FBI to investigate the contacts. Trump asks Comey to stop the investigation and when he continues with it, Trump then asks the director of the NSA to go out and contradict Comey. He then fires Comey and tells the Russian officials that firing him will take the heat off.
Of course the investigation will settle whoever it settles, but you are ignoring gigantic clouds of smoke in your assessment that there was no collusion.
Of course not, but those are not even similar comparisons.