ZHA and ZLL devices on the same network

I’ve read a number of contradictory posts on the subject above, many people saying it’s fine (even recommended) to have ZHA and ZLL devices on the same zigbee network to maximise coverage. Others saying that they should be kept separate because ZHA and ZLL is not 100% compatible, resulting in ZLL routers not processing traffic properly from ZHA devices, causing loss of data. What are people’s views and experience on this? I have several hue bulbs and would love to be able to add these to my mesh to improve the coverage.