This post is not helpful as written, as it skips over proper classification for a line of credit, and the "solution" as written doesn't allow someone to properly record line of credit transactions.  

Lines of credit are Other Current Liabilities.  

They are not bank accounts, nor are they credit cards.

The key issue at hand is that QBO, as of the writing of this reply, appears to not permit a user to link a bank feed of a non-credit card current liability account to QBO.  I hope I am wrong, but I cannot find a way to do so. 

I have our line of credit accounts manually added to QBO, but I cannot find a way to link the bank feeds for either of the accounts.  

How can a line of credit bank feed be linked to QBO?