[unkn0wn123]

Asking the obvious, Is the serial still under warranty?

I believe so, I registered it and know the date of manufacture is July 2018. According to Bose themselves
"The warranty is valid from the date of retail
purchase for a period of 2 years and a period of 5 years for passive, non-powered
loudspeakers."

for passive, non-powered loudspeakers."

Does this actually cover the "Bose headphones?".

It does I reckon, they're just saying for non-powered loud speakers the warranty is for 5 years instead of 2 judging from the wording. I'm reading from https://assets.bose.com/content/dam/Bose...NTY_EN.pdf