Cymbidium seed sowing

[Reviresco]

I read an article some time ago how in the early days of orchid growing they used to sow the seed from cymbidiums on the compost around the top of a growing plant , or in a tray using spent compost from repotting , photos were included with a few seedlings growing. Has any else heard or tried this .
This may have been in an old orchid review I can't really remember