What else lies inside this remote? On the top side:

Nordic Semiconductor nRF52840 Bluetooth 5/Zigbee/NFC SoC

… and on the bottom:

Analog Devices 343S00092 capacitive touch controller

Maxim Integrated MAX77277 power management

NXP Semiconductor CBTL1610A3 port controller

(e1) AA5 105 (maybe Dialog Semiconductor audio codec)

Infrared diode