After further listening to Ticket to Ride mono remastered mix, I could not escape noticing, again, how close the arpeggiated lead guitar chords sounded to The Byrds’ Mr. Tambourine Man. Upon further research, I found that The Byrds’ single came out April 12, 1965, while Ticket to Ride was available in US stores a mere seven days later. Even though Ticket to Ride’s UK pressing was issued April 9, the master take of the Byrds "Mr. Tambourine Man" was made on January 20, 1965, and no major further changes were made to that speicific take.
Another case of simultaneous artistic groundbreaking, I guess.