Finally I am hearing both of these stations at the same time! 1219z on 12 Sep 2016. The presumed Hiker on 7998.3 with a shorter dash, and the other station on 7998.46 or so with the longer one.
And now at 1224 they have both faded out. Very interesting. I will have to check again about this time tomorrow morning, and see if I can hear both again.
At 1347 I am hearing the longer dash 7998.46 beacon again, but very weak.