Comey carefully protected himself from perjury. Obozo rather than Obozo’s administration, wiretap rather than surveillance, inside the FBI rather than in any Intelligence Agency. He picked his words very carefully.
IIRC, Obama very recently signed an EO saying all these spy people could share.
The Clintons have taught us how the “extremely literal” game works. Comey’s answers mean only that he has seen no evidence of 1930’s style physical interception of wires serving Trump’s personal phone inside Trump Tower under a specific order for same signed by Obama. Not covered by his statement: Digital signals interception; cell-phone interception; computer server intrusion; anything done at any location other than Trump Tower; anything involving anyone other than Trump himself, anything done under orders signed by the AG, the FISA court, Comey, or anyone other than Obama; surveillance under other investigations that just happened to surveille Trump, his campaign, and his associates “by accident”; etc.