I don't see why this seems weird at all. Any funeral looks just as strange, especially to an outsider. Or is the question "how did they know?". If so, it's not so much weord as natural for species members to know about each other. What is weord, seems to me, is believing that it shouldn't be possible. 'Course if you belong to the Crick school of core materialism, it might seem weird, but that just comes from holding on too desperately to an unworkable paradigm. To a flat-earther, satellite communications probably seem all weird too.

A