I suspect there will be some impact. They're not totally different products in the sense that they compete for a similar segment of a household's budget.
Lately Switch sales have benefited from a drop off in PS4/X1 sales, which in turn has occurred in part due to the imminent release of the next gen machines.
Why didn’t the Wii U benefited from the “drop off” of PS3 and Xbox?
I think the switch sales benefited from Animal Crossing releasing.