Why no Connecting Flight? (appendix)

As an afternote, I've posted the rough sketch of the map of Philip's journey as outlined in Acts 8 : 26 - 40.

I was researching into the distance between Samaria and the desert road from Jerusalem leading to Gaza. And what I found out based on rough estimation amazed me even more. The Bible does not state where along the Desert Road did Philip exactly establish contact with the Ethiopian eunuch. A conservative estimate would put the distance at approximately 45miles (72.5km).

Now we're talking!

I may not be at that level to fully understand yet, but I'm starting to see the real value in the long, solo journey that he undertook.