Thx, I have found that the small to medium Lemmy instances are NOT aware about the post, yet most of big instances are. So it fits what has been said: “New posts and comments should always propagate if at least one user is subscribed to the community.” - big instances and old instances has higher likelyhood of someone being subscibed to it prior to me posting the post, so the instance could download that post. Related topic: What are the conditions for the Lemmy post to be distributed to other Lemmy instances?
Reminded me Lucy Lawless (Xena) :)