Squeeee piggies.
First of all- perfectly normal that they will hide. They are prey animals, everything (including you) is out to make them into lunch (in their opinion)
They need to feel secure and they won't do this exposed, so they hide.
They will eat but move the food away from the housedoor - one might trap the other in the house either deliberately or accidently while eating. One of your pigs will be the dominant one, you'll see their personalities (piganalities
) emerge over time.
They will know each other is there, they'll wheek or chirp to each other.
(My three sleep in separate 'housies' they seem to like their space but need each other for company)
And - they will scarper when you approach. Normal
They might not drink- normal but always offer water daily.
You may well find by morning the food has been taken, piggies are crepuscular (dawn/dusk active) but they'll be awake by day and catnap .
Our GP5 has only just settled in the last couple of weeks, we've had her and GP4 for 5 weeks now (to match with GP3-now neutered)
So they all differ but food and patience is the way.
It's all new to them, Guineas are the most defenceless small pet. They don't jump, climb,bite,kick out. Their chubby little shapes mean they can't strike out. So, they hide.
(Though my boar kicks
)