You want to bear in mind that THE BORG will not be around for any great
length of time. They do not wish "friendship" with humans as they consider
humans do not have sufficient intelligence to have any kind of intelligent
conversation with.
They view humans as very inferior species - very savage - who do not yet
have the basics of civilized society such as living together in peace.
They laugh loudly and voluminously at human religions - so you really should
not speak to them about those!!!
But be prepared.
If and when they do provide proof it will be very very odd.
And it will alter things on Earth hugely once humans KNOW of advance alien
intelligence.
Whether they will then speak with humans or merely laugh at them as they
have done on this group - I do not know.