What is the correct way to put the ESP-12F (WiFi) and HC-05 (Bluetooth) in close proximity on the board?

Question

Electronics

What is the correct way to put the ESP-12F (WiFi) and HC-05 (Bluetooth) modules in close proximity on the board?
Let me explain: there is a printed circuit board with a space of 30x40mm for placing these modules, I have not found datasheets for wiring boards specifically for these modules anywhere, that is, there is nowhere to peep the recommended security zones. Prior to that, he bred boards on WT12 bluetooth modules, there was a clearly marked sector in which it is not recommended to install other radiating and shielding devices on the printed circuit board.
How to put modules so that their influence on each other is minimal?
Maybe someone has datasheets with examples of correct wiring? Especially interested in such things for esp-12f.

Answer 1

Separate the antennas as much as possible. Preferably in different polarizations.

Answer 2

https://www.espressif.com/sites/default/files/docu...
15, 16 pages.