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LAUNCHXL-CC1350: Schematic questions

Part Number: LAUNCHXL-CC1350

1. Is the section circled in blue just for biasing the RF lines and not for any type of matching?

2. Why is there a cross over after the portion circled in red? If I am not using the switch, is this cross over still necessary? (Iwill just be using the 433 MHz path, not the 2.4 GHz).