The phrase except after feeding appears on B262 as an asterisk notes for two of the three Supernatural Features that a Vampire has.
No Body Heat and Pallor do not apply "after feeding" through it's not clear for how long a period afterword. The three features (including No Reflection which has no asterisk) are priced at -16
B157 defines No Reflection as being -10. This implies the other two are worth -6.
There are notes for how the other two (normally -5 and -10 totalling -15) get to that:
- -5 points if you can gain the flush of life temporarily
- -1 point if you can gain warmth temporarily
Both summaries include the example "after feeding, for a vampire"
In the case of Pallor, this would be a -50% mitigator
In the case of No Body Heat, this would be a -80% mitigator.
Ways to look at those mitigators via Reciprocal Advantages with limitations would be:
- "Not Pallor -50%"
- "Body Heat -20%"
Both might be seen as having B115 Trigger.
B132 Draining (Human Blood; Illegal) [-10]; classifies this as "common" which is a -20% for triggers, and a 50% increase to the limitation makes that -30%. Clearly the "minute pricing" is a bad fit here.
Trigger, Extended provides a potential answer. Value is halved/quartered if it lasts ten minutes: only -15%.
The remaining 5% (body heat) or 35% (pallor) might be accounted through something like Takes Extra Time representing the delay after feeding before it takes effect.