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Seeing with comprehension - was [ rsync error -- "Protocol incompatibility" Why?]

Question 1
I tried to backup another partition.
The command I *THOUGHT* I gave was:

rsync --verbose --progress --stats --recursive --times --perms --links \ /media/richard/jessie8-6-sda6/ /media/richard/backups/jessie8-6-sda6/

I got a similar error message to last time (i.e. 'file not found').
The problem was a non-printing character (space?) after the first line).
Is there a graphical editor which would high-lite that "something" is there?

Question 2.
When it ran I happened to be sitting by the display and noticed things of the form:

            963 100%    2.32kB/s    0:00:00 (xfr#88022, to-chk=21/128033)
var/spool/mail -> ../mail
              9 100%    0.02kB/s    0:00:00 (xfr#88023, to-chk=14/128033)

Do the lines not followed by statistics just mean "0 length files" or "it's just a link"?

At the end it said:

* Number of files: 128,033 (reg: 88,026, dir: 7,503, link: 32,466, dev: 37, special: 1)* * Number of created files: 127,995 (reg: 88,026, dir: 7,503, link: 32,466)*> Number of deleted files: 0
Number of regular files transferred: 88,026
Total file size: 2,837,281,458 bytes
Total transferred file size: 2,836,525,656 bytes
Literal data: 2,836,525,656 bytes
Matched data: 0 bytes
File list size: 4,717,282
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 2,845,135,440
Total bytes received: 1,819,035

* sent 2,845,135,440 bytes received 1,819,035 bytes 2,837,024.89 bytes/sec *
total size is 2,837,281,458  speedup is 1.00

The high-lited lines caught my attention.
I take the first two seem just to report that rsync is copying intelligently.

I don't understand what the third is telling me when there is a difference between bytes sent and received. I assume it is benign as the was no error reported.