Top crypto analyst Mati Greenspan tweeted that after April 8 halving, it became unprofitable for miners to mine Bitcoin Cash and as a result, now they are massively switching to bitcoin (https://cryptorank.io/currencies/bitcoin/price-chart) mining.
Indeed, the BCH hash rate plummeted after halving, after even BCH’s biggest backer, Roger Ver, stopped mining this currency.
Speaking about the prospects of the situation, Greenspan admitted that in turn, after BTC halving in May, some miners will probably return to the BCH blockchain.