I am sure Nintendo will go towards that "Fusion route" but not the way that some people are thinking like having this wonky ass hybrid one console cause things really don't work like that.
But either ways, no... Sony would much rather make exclusive games for their mobile than give them to Nintendo handhelds unless they sell their mobile division but even then
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850