Pure speculation with no facts to backup your hypothesis.
Consider your hypothesis and then refer to the current situation and the actual numbers of those infected who actually were within range of the window of “possible infection”. If such a possibility was in fact reality, the numbers of those infected would be astonishing, but in fact the numbers of those infected are not corresponding to said hypothesis.
I’m not saying it’s out of the realm of possibility, I’m simply saying that the observations to this point do not correspond to such a hypothesis.
Only time will tell, as now it has been reported that incubation can be as long as 90 days, people that have been successfully treated can remain carriers and, maybe the reason it is more spread this time, is because people from the initial outbreak areas are more mobile and not as, “homely” as they once were. Granted as one gets closer to 90 days, the contagion becomes less reactive. It is still a possibility to remain aware of.