Context Deadline for Lambda Running from API GW

[js10x]

When running a lambda handler that is executed from an API Gateway integration, does the context timeout align with the timeout set on the lambda function itself? I am getting context deadline exceeded errors when the invoke takes a little longer than ~2 seconds, despite me having a 15 minute timeout on the lambda itself.

Sample:

func main() {
 lambda.StartWithOptions(handler, lambda.WithContext(context.Background())
}

func handler(ctx context.Context, req *events.APIGatewayProxyRequest) (*events.APIGatewayProxyResponse, error) {
 // code runs here that takes ~2 seconds or more, but less than 15 minutes (timeout set on lambda)
 return nil, nil // omitted for brevity
}