This is the third Avengers: Infinity War tie-in book to be released this year, following Thanos: Titan Consumed, which explored the purple warlord’s origins, and The Cosmic Quest Volume One: Beginnings, which followed The Collector getting his bearings following his run-in with the Guardians of the Galaxy and dealing with his brother, The Grandmaster, after the events of Thor: Ragnarok.
Maybe that’s not the case with The Cosmic Quest Volume Two: Aftermath, but unless Erik Selvig and Darcy Lewis appear in Avengers 4 intact, we won’t know for sure whether they are indeed still alive in the official MCU timeline.
It is important to note, however, that Thanos: Titan Consumed was clarified to be non-canon within the MCU despite being a tie-in.