I am not aware of any such visualization that goes from point A to point B...
The problem is that the flow diagrams show "X steps" from a starting point, or "X previous steps" for an end point...
When trying to look at A > Z, there are going to be a lot of different path lengths, and that doesn't really work well into the visualization.
If you are looking for "key" points in the flow, a fallout can work.. but I am guessing this isn't what you want.
Honestly, if you need all that granular data, pulling out the data using Raw Data feeds then using SQL to map all the flows is the only option I can think of... but that comes with its own set of challenges....
