Can I connect my Nintendo Switch to a TV without the dock?

Not with a standard HDMI cable alone. The Switch dock contains internal hardware to allow video output and power input simultaneously, so simply plugging a USB-C to HDMI cable into the console won't work on its own. However, there are compact third-party dock alternatives that combine these functions into a small adapter, which is useful for travel.

Can I use any USB-C cable to charge my Nintendo Switch?

Most USB-C cables will charge the Switch, but for full-speed charging — especially while playing — you need a cable that supports USB Power Delivery (USB-PD). The official Nintendo Switch charger outputs 15V at 2.6A, which is essential for maintaining charge during active gameplay. A standard phone charger cable may charge the console slowly or not keep up with power consumption during demanding games.