Post corporate action or after IPO, if stocks list on both the exchange at different prices for some reason, and if they keep hitting upper/lower circuit (like in Alok) everyday, the difference in listing price between exchanges will exist until one of them goes out of the circuit.
So for example say a stock listed (after corp action or IPO) on NSE at Rs 100 and on BSE at Rs 110. This price difference because at listing there is still no clarity on what the ideal price should be. After this say stock moves up 10% which is the circuit, NSE will hit at circuit at 110 and BSE at 112. This will keep happening until the exchange where the price is higher stops hitting circuit and where the price is lower catches up.