Can Lucio's Speed Boost Increase Fire Rate?

Can Lucio's Speed Boost Increase Fire Rate? - Spacecraft launching into orbit during sundown

I want to assume the answer is no and that I'm just going crazy. I just lost a match in which a Reaper, in the kill cam, seemed to be firing much faster, as well as moving faster. There was a Lucio using speed boost at the time. Is Lucio ever able to increase fire rate?

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