Nope, I believe that is a SN2 rxn, for water to be a leaving group r-ch2-oh2+ off of the ethanolium ion, it will exist as a specific ion a neutral ph of less than 10-7m. Sulfuric acid cause a condensation with this as a leaving group forming diethyl ether.
CH3: has and extremely low pka. It will pull a hydrogen off of anyhthing, including basic ammonia. CH. is a free radical, it will pull hydrogen off water or geneally any labile hydrogen. CR3+ is a SN2 intermediate, it tends to be fabored if R is not H. Free radicals can exist during cracking, adding a source of hydrogen breaks larger molecules, particularly with branched alkanes. Addition of hydrogen to a mixture that has unstable aromatics tends to favor cyclic alkanes or branched alkanes.
CH3-OH plus HBr forms Metyl bromine and water. This can be treated the borohydride to form methane, with ammonia to from methyl amine.