timeline:
submitted: nov 6 2021
ghost email - feb 23 2022
aor: mar 26 2022
application linked - mar 26 2022
medical passed - April 5 2022 (they considered the medicals given in 2019 for super visa)
received Sponsorship approval in mailbox on April 6, letter is dated as April 4th.
Now - they are asking for the pending documents(which include PCC). The most recent appointment I could get for a PCC from India is for May 2 2022

and I imagine it will take at least another 20 days to get it back
Question - Is there a deadline to submit PCC after receiving the Sponsorship approval letter?
Weird that they sent the Sponsorship approval letter in physical mail rather than an email. is it common?