Executive office of the President (EOP) did not get hacked.
Document said Tech executive abused his position and trust placed in him providing DNS services to EOP.
https://yournews.com/2022/02/13/2298919/john-durham-filing-suggests-clinton-operatives-spied-on-trump-in/
Well that's at least how I read the sentence:
"Tech Executive-1’s employer, Internet Company-1, had come to access and maintain dedicated servers for the EOP as part of a sensitive arrangement whereby it provided DNS resolution services to the EOP"
Seems you know more. Would appreciate if you could shed a brighter light on it, if you can.