I never know what post number I will get. . . So probably not. It usually is busy and therell be several posts between hitting reply, and post, before the lexicon actually gets displayed. Ive seen as many as six more replies posted between when the lexicon hits and I can post another reply. . .
I can warn the lexicon will be there in the next few posts. . . I try to hit the bottom of the page so the next page can be hit.
Your idea is good, but not too practical, unfortunately, given the unknowns.
It might be easier and more agreeable for some/many? to scroll back a few posts to cover any missed than to scroll through the whole lexicon.