Ryan Giggs on his disagreements with former boss Van Gaal
But the former United assistant insists the pair learned to work together.
Giggs served as the Dutchman's No.2 for two seasons before Van Gaal was sacked in the summer.
The 42-year-old is looking for his first managerial role and insists he will take away positives from their time together.
He told Sky: "It's not about biting your lip.
"And it wasn't just me, there were other coaches. You put your point across. Sometimes Louis would go with it and sometimes he wouldn't.
"He was the manager, he was the boss, and once Louis made that decision, you went with it, even if you didn't necessarily agree with it.
"As an assistant, it can be frustrating at times but also it's a great job to have because ultimately the pressure isn't on you.
"It was different in a lot of respects to what I'd been used to under Sir Alex for so long but I learned how to set up a team and different coaching sessions. Like anything, there were bits that you would take and bits that you wouldn't."