[tetha]

True, but almost everyone who is not into combinator calculus is just going to see:

YCombinator. BCombinator. Wait. They are not associated despite just a single letter difference?

It is a similar problem as with ESL, ESL-Radio and ESL-TV. Sounds like they are an esports league, a radio reporting about an esports league, and a video streaming site about that esports-league? well... wrong. ESL-Radio has almost nothing to do with ESl and ESL-TV and is a video streaming site about ESports, while ESL-Tv streams some subset of the Esports league ESL, and the ESL is a big esports league.

So... please value distinct names to save us all a bunch of confusion.