4X1RF (3519km) again spotting me on 6m WSPR

Since lunchtime, 4X1RF (3519km) has again been spotting my 1W ERP WSPR signal on 6m. I am pretty convinced this is E layer, but remain skeptical this is multi-hop Es which is the conventional wisdom. 3519km is a long way for Es multi-hop. This path seems pretty regular so I wonder if some other E layer mechanism is going on? Possibly some E layer chordal hop?  Signal levels suggest even lower power would have been successful such as 250mW or even less. So far today he has spotted me 6 times already. He has spotted me on several days this season as well as last summer. There are a reasonable number of stations active on the 6m WSPR band.

UPDATE 1607z:  Yesterday was one of the worse days I can recall in recent months on 6m and 10m WSPR. Today has been one of the best with plenty of Es on both bands.  Both are "magic" bands and you can never be quite sure what the day will bring.