Hello,
I have almost the same configuration (with ADSL and PPPoE connection instead of LTE) and it is possible. However, I currently have a little problem with the use of ONT because I don't have a router upstream (https://forum.opnsense.org/index.php?topic=32377.0)
I have almost the same configuration (with ADSL and PPPoE connection instead of LTE) and it is possible. However, I currently have a little problem with the use of ONT because I don't have a router upstream (https://forum.opnsense.org/index.php?topic=32377.0)