CC mystery on 9920 & 15110

UNKNOWNISTAN: 9920, SIO=3+53, //15110, SIO=3+53+; 1411, 4/13;
M&W in CC; 4/19 EiBi shows only Taiwan Sound of Hope in CC
at this hour & China Nat’l Radio & VoA Philippines in CC on 15110;
4/13 Aoki has nothing on 9920 during 1400 & VoA Philippines on
15110. No other //s found.