When would Festool recommend using the Anti Static Smooth Hose D36mm x 3-5m with RFID (204924) instead of the Anti Static Smooth Hose D36 32mm x 3-5m with RFID (204923)

The 204924 (36mm) hose is best for general clean-up when using floor wands/ nozzles, to help minimise blockages and for maximum flow with cleaning equipment.
The slightly tapered
204924 (36/32mm) is suggested when connected to a power tool to increase the rate of suction (for example concrete grinder RG 130 EC ).