@VikeMan - but that was the point, you don't need saccharification and full conversion if you don't need the sugar from the base malt. It's just being used to add flavor.
I'm not sure we're saying the same thing, so to amplify/clarify...
With 15-20 minutes at 155F, you are likely to get full conversion. Full conversion is simply conversion of all the starches into things that are not starch... glucose, fructose, sucrose, maltose, maltotriose, and higher (unfermentable) dextrins. Regardless of the mix of these sugars/dextrins, if the starch is gone, full conversion happened.
Regarding saccharification, you'll get that too. You won't get as many fermentable sugars as with a longer/cooler mash, but the amount won't be insignificant either. If by saccharification you mean conversion of starches into
just fermentable sugars, with no higher (unfermentable) dextrins left over, that doesn't happen in any mash. If it did, our beers' final gravities would routinely be below 1.000.