"Surveillance under FISA is not limited to the individual targeted, as the government also surveils individuals with whom the target communicates, and individuals with whom those individuals communicate. That process is called the “two-hop” rule and allows the government to spy on and collect information and communications from individuals who are two degrees separated from the actual surveillance target. Therefore, even if Page never personally spoke to Trump on the phone, the government could still eavesdrop on Trump’s conversations if Page spoke to someone who had spoken to or electronically communicated with the president." -article mentioned above
Why continue to use the FISA warrant once they knew they had nothing on Page? I think Occam knows that Page was the Trojan horse not the target. And yet FISA gave them NOTHING on Trump.
They had to use hearsay to fabricate this bogus impeachment on something totally unrelated to the original smears.
Why run forward? Because this is an election year, time is running out and they will do ANYTHING to win!