If we bump with China, I would be very surprised indeed if there was not significant action in both space and cyber. These are domains we both compete within and build capabilities either designed for the other, or that are a threat to the other and therefore a target.

No surprise there. Cyber and space may be similar to how great powers have prodded at each other in small 3rd party conflicts, like we did with the Soviets in Vietnam and Afghanistan and elsewhere. A space where one can impose costs with low risk of direct warfare on one's home turf.