all the way up the line

[keannu]

Mary decided not to pursue offering Lincoln High School a donation. She wasn't comfortable with the idea, and she knew that her sales manager and superiors all the way up the line would object, on both ethical and practical grounds....

Does this "all the way up the line" mean "all the people along the higher positions"?

 

[emsr2d2]

Yes, her sales manager, her superiors and everyone of a higher grade than that would object (and so they should!)