Can you crack the code?

 

I recently read parts of a biography of Harav Hagaon R. Avrohom Ganichovsky zt"l (R.Y. Tchebin) R. Avrohom Ganichovsky, whenever he met his friend להבדיל בין חיים לחיים, RSKBH"G Harav Hagaon R. Dov Landau Shlita (R.Y. Slabodka) they spoke in learning in code language. One mentioned a few words or a מראה מקום and the other responded the same way. They both understood what the other meant to say. I once heard of an outstanding Talmid Chacham who said on himself that he feels like the biggest Am Haaretz when he stands next to these two Gedolim talking in learning and he has no clue what they are discussing. The ספר gives an example and writes, They met  on Sunday פ' כי תבא and R. D. Landau told him that during קריאת התורה of the past Shabbos he was thinking, "האם לא יוכל לשלחה חל על לא יוכל שלחה" To this R. A., Ganichovsky responded "בשלא כדרכה" There is no explanation in the ספר for the meaning of this conversation or what it's all about. Can you crack the code?     R. D. Landau was thinking, "האם לא יוכל לשלחה חל על לא יוכל שלחה" To this R. A, Ganichovsky responded "בשלא כדרכה" *Perhaps we can assume, R Dov Landau Shlita was thinking during קריאת התורה פרשת כי תצא  if one is מוציא שם רע on his אנוסה, being there is an existing לאו of לא יוכל שלחה Is there an additional לאו of לא יוכל לשלחה of מוציא שם רע? To this R. A., Ganichovsky zt"l responded, this is only possible if he was מאנס her שלא כדרכה. *Tens of תלמידי חכמים responded with the same answer