Done some quick research The issue at Piccadilly is the outer platforms which carry the through traffic including the freight trains to Trafford Freight Terminal
I found a website that tracks trains and applied a filter for the above here are todays results, some actual and planned
The numbers are total, regardless of direction
From midnight to 07:00
10 trains
07:00 to 10:00
2 trains
10:00 to 16:00
5 trains
16:00 to 19:00
4 trains
After 19:00
5 trains
So a total of 26 trains
Crucially 15 of these were before or after 7:00
>£300M to remove these from the pass through