I expect a retrace once etc hits the top of resistance trendline, but the question is would the retrace be to a new support trendline or old one? 3 perfect all time highs in a row is signal for steady growth and boost in confidence. It's very likely it might not need another cycle to get to parity, but go there after only partial retrace. if it goes back to original support trend, I would probably expect a last 4th cycle to get to parity, but I have to think that confidence is too high then.
As I observed it, eth is currently completely reactionary to etc moves, and doesn't provide much other information.