Strange New Worlds' series premiere showed that Pike is still angsting about his vision on Boreth and is reluctant to return to duty because of it, even ignoring Admiral April's calls. Strangely enough, we are told that Pike now know roughly when the future he saw will happen (he tells Spock something like "about a decade from now"), although it's unclear how Pike knows this as this wasn't stated in Discovery. Furthermore, Pike is limited in who he can talk with because of the ultra-classified nature of Discovery's disappearance, as seen in Pike's conversation with his also Starfleet girlfriend. However, by the end of the episode we are told outright that Admiral Robert April is in on the coverup regarding Discovery and knows all about it, having used a loophole to claim that since Discovery's battle that gave the aliens warp tech officially didn't happen, Pike is therefore in the clear in regards to responsibility involving the aliens' future troubles. April is shown to be a reasonable authority figure and a fairly nice boss, not asking any questions when Pike ignores repeated communicator calls and offering Pike a chance to leave command, no questions asked. It's obvious that April knows something is up with Pike, but doesn't pry. (Keep in mind this is a lot nicer than other licensed, albeit non-canon, portrayals of April which show him to be kind of a jerk in the Early Voyages Marvel comic covering the 2250s and in IDW's Kelvin Timeline comics, which have him as a Section 31 terrorist who's ultimately arrested). Why doesn't Pike outright tell April what happened on Boreth? At the least April will know why Pike is suddenly feeling conflicted about command. Since April is already in on Discovery's situation, it won't break any classification rules. As it is, talking to April about his future is better than alluding to it randomly with first contact aliens, which is what Pike ended up doing in this episode.