Sorry if I wasn't clear! I meant that since there are rumors about Leica releasing an SL3-S (which would almost certainly have Panasonic guts, just as the SL3 does) and because there are rumors that Panasonic will be releasing two bodies soon (one of which will likely be the S1R II which puts SL3 guts in a Panasonic body), it's not out of the question that whatever is in the SL3-S will be in Panasonic's S1H II.
I'd say that Panasonic sales don't meaningfully compete with Leica sales - both are niche companies and Leica is much more the "luxury" brand. However, if Panasonic release an S1H II, it will be competing with their own S5 II which is already really good (not to mention the original S1H which is also really good). The S1H, when released, was like $4k. At almost 2.5x the price of an S5 II and still more than 2x the price of the S5 IIx, an S1H II is going to have to be a hell of a camera to ship more than a few units (assuming the price stays similar).