When you do a command like "/say @a[score_Objective_min=#] Message" or "/say @a[score_Objective_min=#,score_Objective=#]] Message" it automatically puts "and" in front of the players name
so instead of "[@] Player Message" it says "[@] and Player Message"
This ticket has been marked as a duplicate of MC-30991, in favor of the better description or information provided.