How did Black Mesa react to the BYDTWD incident at Aperture Science?

As far as i am aware the Black Mesa incident happened after the BYDTWD. I’ve been wondering for quite some time now how Black Mesa reacted to that incident. Obviously they were competitors so it wouldn’t have been that off for Kleiner to make a comment about it at the Borealis debate in Half Life 2 Episode 2.
Due to the lack of acknowledgement of the incident from Black Mesas side I am wondering wehter the BYDTWD incident is actually known in the Half Life universe.

What are your thoughts on this?
Also why didn’t the combine try to get into Aperture Science?