Connection UR816C with turntable

Hi

I just bought the pro-ject T2 super phono turntable which has internal preamp. I have a question about connections.

I have the Yamaha steinberg ur816c audio USB interface and two EVE audio sc208 active monitors connected to the interface via Jack 6.3 - XLR balanced. The monitors got also RCA unbalanced inputs.

Should I connect my new turntable to the interface or directly to the active speakers through RCA input?

Is there any real difference in audio processing between those two options?

If I use interface combo inputs, how to set them to line level?