Read data from AWS RDS Postgres in account A to AWS Glue in account B with only : host, port, user, password and dbname

Hi, I have a pipeline that uses multiple open source softwares which reads data from AWS RDS Postgres in account A with only the following details : host, port, user, password and dbname snowflake. I would like to use AWS account B to do the same with only those details. I tried to create a connector but when I tested, I get the following error : InvalidInputException: Unable to resolve any valid connection. I do not have details such as subnet, security group and etc. But if opensource softwares are able to read with those configs, I should be able to too with Glue or any other service. I have no access or any other details to account A.