It's all connected. Half a minute or even more could be shown in little window in corner like in almost all stages (not regular live TV clips). Then switched to drivers who are driving. When last of WRC cars finish it's quite logical to continue with R5 who by the way there were like 3 or more on the road already. Capish...
About camera kits. There is manufaturers involved in WRC2 championship and all of them want good sales and exposure. When there is millions involved I think that few k's doesn't mean anything to them.