Sharing is caring. 😀
E.g if you were to install two SATA SSDs in your PC, you'd also get notification that these two SATA drives are sharing MoBo chipset PCI-E lanes. Last i checked, it wasn't an issue when installing more than one SATA drive into the system. Or installing M.2 NVMe alongside dedicated GPU.
In fact, in my main rig, Skylake (full specs with pics in my sig), i have dedicated GPU, 2x M.2 NVMe SSDs and two SATA SSDs, among other hardware. All of them are sharing CPU and MoBo chipset resources and are working fine.
So, no, hardware sharing resources isn't an issue. This is how it is supposed to work.