IMO, the Bitcoin exchange rates may go down if there is a crash in the stock market. People will be left with less money and therefore Bitcoin purchases will go down. The existing users will be forced to sell their coins, in order to cover their expenses. Ordinary people are more likely to shift to less risky assets, such as treasury bonds and gold.
aren't we there yet few months ago? when the trade war between china and US happened?
the stocks market fall down so do with bitcoin market nearly reaches its lowest since last year. that is a small picture , if we have to compare it and make a simulation i think the falling of cryptocurrency market is sure inevitable.
gold still become the safe haven as we are still watching the old rich guy living , the next generation will highly considering crypto as their safe haven , just the matter of time.
that is my worst scenario and the crash itself won't recovered in a short time .