WWE posted a video highlight of Chris Jericho talking to John Cena about his experience in Ohio Valley Wrestling during the WWE Network special that aired on Monday at this link. You can also watch embedded in the video below:
As for the interview being conducted by Jericho and not Steve Austin, a deal simply wasn’t reached to do more Austin podcasts on the WWE Network. There was an agreement for the initial two - the one with Vince McMahon in December '14 and Triple H in February '15 but they didn’t come to terms on anything beyond that. According to Austin, there is no heat between the two parties.