The part Team Trump is angry about is this:
Parlatore said "Boris Epshteyn, used his authority to run interference and halt legal cooperation with the feds."
Big surprise: Epshteyn didn't like being thrown under the bus.
Epshteyn caught the drift; Parlatore was accusing him of using his position of influence to obstruct the DOJ special counsel’s investigation.
Translation: Epshteyn was looking out for Trump the politician. Parlatore was acting like this was a normal criminal probe.
2/