I doubt KLSY and KXXO will carry the same format - there's a significant overlap between the two, and both stations reach Seattle, Tacoma, Olympia and Chehalis with decent signal, even if FCC contours don't show KXXO reaching Seattle.
My guess is that KXXO will go Urbana or La Maquina; or possibly be LMA'd to a different Spanish Christian format like Radio Amor as heard on 1210. There could also be a swap between KLSY and KXXO, which could see KLSY going 'secular', but a simulcast between KXXO and KLSY would be total waste of airwaves due to the significant coverage overlap.
My guess is that KXXO will go Urbana or La Maquina; or possibly be LMA'd to a different Spanish Christian format like Radio Amor as heard on 1210. There could also be a swap between KLSY and KXXO, which could see KLSY going 'secular', but a simulcast between KXXO and KLSY would be total waste of airwaves due to the significant coverage overlap.