all along the line

Related to all along the line: all the way down the line

all along the line

At every step or stage. Mistakes were made all along the line, and that's why the promising new company went out of business so quickly.
See also: all, line
Farlex Dictionary of Idioms.

all along the line

Also, all the way down the line. At every point, stage, or moment. For example, We've had problems with this supplier all along the line, or He's been very helpful all the way down the line. The line originally referred to a row of troops, but the expression has been used figuratively since the late 1800s. Also see somewhere along the line.
See also: all, line
The American Heritage® Dictionary of Idioms by Christine Ammer.

all (the way) along (or down) the line

at every point or stage.
See also: all, line
Farlex Partner Idioms Dictionary

all along/down the ˈline

,

right down the ˈline

(informal) completely; at every stage: We’ve had problems with this software all along the line. It was a complete waste of money. He supported their campaign right down the line.
See also: all, down, line
Farlex Partner Idioms Dictionary

all along the line

1. In every place.
2. At every stage or moment.
See also: all, line
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • all along/down the line
  • get in(to) line
  • come in(to) line
  • come into line
  • get a line on
  • get a line on (someone or something)
  • get a line on someone
  • step out of line
  • be out of line
  • along the line