Bouncy castle AES-GCM mode vs openssl AES-GCM?

I am trying to do some research on AES-GCM. I am trying to encrypt some data using Bouncy castle AES-GCM algorithm and then decrypt it using openSSL AES-GCM but i couldn't. I checked in bouncy castle it return single output(cipher text having length equals to the length of the input plus authentication tag) but in openSSL there are 2 output.. 1 is cipher text equals to the length of the input and other output is tag length.

I checked both follows same standard NIST 800-38D. I checked several of the posts but no where mentioned how to do it but also no where is mentioned that we can't. Any idea?