TFG would be of no help and it would only give him a platform he does not deserve.
Pence... Pence is doing things that make zero sense to me. I don't understand the line he is trying to walk at all. On the one hand, he is still trying to suck up to TFG and the cultists in some insane bid to remain politicly viable when he has got to know those people would just as much kill him. On the other hand, he refused to go along with the coup and has been giving the ok to his staff to fully cooperate with the 1/8 committee:
Axios reports that people in and around former Vice President Mike Pences office have been particularly cooperative as the January 6 select committee focuses on what former president Trump was doing during the more than three hours the Capitol was under attack, according to sources familiar with the testimonies. While Pences former chief of staff, Marc Short, was subpoenaed by the House panel, putting the pressure on him to talk, a source familiar with the matter told Axios that Short would not have cooperated without the approval of Pence.
Other Penceworld individuals who have been happy to help reportedly include former Pence press secretary Alyssa Farahwho went on to serve as White House communications directorand Keith Kellogg, the V.P.s former national security adviser. Farah, who spoke with the committee several times in 2021, seemed surprised to find out how much information [the committee] already had, telling Axios that while those refusing to cooperate likely are doing so out of complete fealty to Donald Trump and not wanting to piss him off, its clear investigators already have their numbers. Theyre realizing the committee has quite a bit more information than they realized. And their involvement is known to a much greater degree than they realized, she said.
Elsewhere, Axios reports that some of the most helpful information has come from second- and third-tier administration staff who were not directly involved but were at the White House on January 6 and had access to top administration officials; those people have been integral to helping piece together exactly what happened that day, according to one committee aide.
https://www.vanityfair.com/news/2022/01/mike-pence-staff-january-6-committee
In the end, I don't think they even try to subpoena Pence nor do they need to.