REC 2020 to REC 709

Hi guys,
I’m working from file PRORES422 HQ C-Log UHD setting in REC2020.

For delivery the broadcaster ask me 2 file:

1: XAVC UHD REC 2020
1: XDCAM HD REC 709

My question is: how can (if i must) convert the master Timeline 2020 in 709?

Thanks in advance.

DaVinci Resolve 14.1
MacPro

Export video in DaVinci Resolve
- Format: MXF OP1A
- Codec: Sony XAVC Intra CBG 480 3840x2160

In Sony Catalyst Browse: Open the XAVC Video file
- Select View - Select Adjust Color (bottom screen)
- Color Space: Source: Rec.2020/S-Log3
- Convert to: 709(800) or HG8009G40 or HG8009G33
- Grade in: Rec.709
- (Make Adjustments)

- Export Video - Transcode Settings: Format: XDCAM
Render presets: MPEG HD .....
Include: All color settings
Output color space: Rec.709