Perhaps we are saying the same thing.
However, let me restate. Per the NFHS mechanics manual LEAD DOES NOT ECHO anything. In 2-man mechanics, Lead has a portion of the 3-point line that is within his primary area. Lead should signal the attempt and the successful shot if it originates within his primary. The Trail should echo this successful try.
If the try orginates from the Trail's primary area, then the Trail signals the attempt and the successful try and the Lead does nothing. No echo.
Is there an echo in here? Hello, hello, hello???
....
Hello, hello, hello
There it is; I thought there was an echo!