I'm guessing yes? Automatic duplex flips while it prints every page, but manual duplex can keep printing pages and requires only one manual turnover of pages.
Afraid that there is no simple and clear explanation for duplex printing. The best way is buying a duplex printer. However, the printer companies always wanted customers to pay more money to buy a more expensive duplex printer. It's a pain for me, too. I can provide you some tips to avoid the problem of manual duplex print.
Make sure the document arrange with numbers correctly and maintain the blank page if necessary.
Preview the "each paper of front and back".
Print Odd pages (forward) and then print even pages (Reverse).
(I am not a native English user. I will appreciate if someone correct my English.)