Star Trek: 10 Things We Now Know About Agent Daniels (aka Kovich)
10. Under The Microscope
"There's no time like the present," as the folks in the Temporal Mechanics Department like to say, so let's get to this one right away. By the shaking of hands in Life, Itself, we discovered that Doctor Kovich had, in fact, been "Agent Daniels, USS Enterprise and other places" all along. For two characters, now one, so scrutinised, it was equally apt that behind Kovich/Daniels in that scene in the series finale of Star Trek: Discovery was a microscope, and one which itself was worthy of scrutiny.
From his first appearance in Die Trying, Kovich had been studied in the most microscopic of detail for any clues as to his 'true' identity. As Daniels, he had already sparked curiosity about his person, about his role in the time travel conflict, and about the 31st century. As for Kovich, any theory was fair in love after the Temporal Wars — Lanthanite, 'Future Guy,' Supervisor, Voyager's EMH, Preserver, Section 31, android, take your pick. Very few got the exact space-time coordinates for 'Temporal Agent' and 'Daniels,' however.
No microscope is truly ordinary, but the one on Kovich's shelf was especially exceptional. Its last known proprietor was a certain Captain Janeway, and she had inherited the by then about 600-year-old piece from her grandfather. How the object came to be in Kovich's possession is not necessarily a matter of time travel, but perhaps simply one of antiquarianism.
Then again, Kovich might well have been eminently familiar with the OG Voyager, perhaps via his fellow time travellers of the Temporal Integrity Commission aboard the USS Relativity. Amongst an array of other collectibles in Kovich's office, two other objects were of note, here: a visor and a baseball. The former of those might suggest that Kovich's "USS Enterprise" was (at least) the 'D,' and the latter more than just hints, of course, at a synchronicity with Sisko.