Using the correct interface they will retain the parking sensor display, volume up/down, station up/down, answer and hang up. But you will lose most of the MFD data
I haven’t heard much about the wireless CarPlay feedback, as we switched to using to Kenwoods after being big fans of Pioneer for years, As Kemwood made a significant jump and perform faster, better nav, reverse tilt screens, HD version and the ability to control the optional dash camera
Also Pioneers were affected by stop/start so need additional parts to overcome this,
Kenwood displays the sat nav directions on the MFD and not affected by stop/start
Wireless CarPlay sounds great but most of us have their phone plugged in to charge as battery life on modern phones isn’t great and if it’s sending information to the headunit will flatten it quicker..