youdontknowme
I do not say O because in medicine absolute 0 is very strange, but conception in such condition is close to it.
When conceiving, the male ejaculates very close to where the ovum is located, in conditions that will only occur on very specific days and with a peak of fertility that lasts approximately 24 hours. Despite the short distance, the sperm can take up to 24 hours and most of them die before arriving.
If with a syringe you deposit the sperm outside the labia majora - the secondary or even the main shield prevents anything else - the air will kill the vast majority instantly, the rest would have to make their way from the entrance of the vagina, which would involve luck, skill and gymnastic acrobatics and travel a long way in an aggressive environment for them.
That said, if not zero, very close to absolute 0.
