I have been following both vaccines and your anecdotal observation matches up with the date sets I’ve read.
I am still looking to get the J&J, but have no idea how to find out which vaccine these sites are giving?
I called Johnson and Johnson about Distribution of their Vaccine.....It actually is sent to the Government and they are deciding where it’s to be distributed. They suggest contacting your Physician or Hospital to see or be contacted if or when it might arrive there.