Do you need to pitch lineset for mini split drain?

Image in link below for clarity. Do you need to pitch the shown lineset in order for the gravity drain to work?


https://ibb.co/sVhK7Hx


thank you

source https://hvac-talk.com/vbb/showthread.php?2223855-Do-you-need-to-pitch-lineset-for-mini-split-drain&goto=newpost