Question about B12 and stomach acid

[Guest guest]

This is probably a stupid question but I have heard/read about the

importance of stomach acid and B12 absorption ever since I met

Idol at the 2005 conference where he discussed it's importance with me

(first conversation we ever had) Anyways, what I don't understand is

if you are taking a sublingual form of b12 where it's absorbed into

the bloodstream via absorption under the tongue than why is stomach

acid important to this process? I know I am missing something obvious.