[mj66]

Getting elements ready for delivery to NBCU and their spec sheet lists this,
Channel 1-6 in 5.1
Channel 07 LT +12dB (PL2)
Channel 08 RT + 12dB (PL2)
Channel 09 M&E LT +12dB (PL2) (Fully Filled)
Channel 10 M&E RT +12dB (PL2) (Fully Filled)
Channel 11 LT +20dB (PL2)
Channel 12 RT +20dB (PL2)

Can someone tell me what the +12 and +20 refers to?

I am assuming 0dB on the meter is -20dB.

I see someone else asked this question many years ago and the answer was these are peak levels, but this does not make sense to me, why would they want a peak of +12 wasting 8dB of headroom?
If it is peak levels do I just lower the whole mix for the +20 or should it be remixed so peak hits the target and the mix still sounds correct at 85dB?

My understanding is they should be giving loudness and peak values.

Thanks in advance.