Did the Northern Kingdom of Israel/Ephraim reunite with Judah during Hezekiah's 2nd Passover?

Join me (Scott Harwell), Jeff Brannon, and Doug Krieger as we "debunk" the weak argument that Hezekiah's 2nd Passover resulted in the divided kingdoms of Judah and Israel reunited at that time.
Dr. Michael Brown, most Messianic Judaism denominations, the late Chuck Missler, Joel Richardson, Jacob Proosch, and the vast majority who still teach and adhere to some form of separation theology (dispensationalism), all have taught and teach ONLY Jews are Israel and the "church" is a new and separate entity.
Despite the hundreds of distinctions in Scripture where BOTH Judah AND Israel/Joseph/Ephraim are discussed, prophecies which are ONLY to Judah and/or ONLY to Ephraim/Israel, these well-meaning but INDOCTRINATED scholars and teachers, in order to hold on to the theology they all LEARNED, must try and argue that the divided kingdom, at some point in history, actually re-united.
All of them "attempt" to argue this occurred at the time of Hezekiah's restoration in which e invited the northern kingdom to participate in? Is this true? Is it even POSSIBLE since the northern kingdom had yet to be exiled?
Obviously, the answer is NO, and the fact that Dr. Brown, Prasch, Missler, and most do not have eyes to see what is obvious is Exhibit A for theological cognitive dissonance and refusing to understand that ALL in covenant are ... Israel.