It is possible to access the Internet from a private subnet only with NAT without an Internet Gateway associate with its VPC?
VPC with public and private subnets (NAT) says below. Just with this sentence, it would be a fair conclusion that it only requires NAT to reach the Internet without an Internet Gateway attached its VPC.
A NAT gateway with its own Elastic IPv4 address. Instances in the private subnet can send requests to the internet through the NAT gateway over IPv4 (for example, for software updates).
I believe for any traffic from a VPC to reach the Internet, the VPC requires the Internet Gateway but the document does not clearly say so, hence being confused.