Yes, I absolutely discard that as the issue. I think there's some network config issue on bitcoin.conf and lnd.conf files but I'm unable to see it.
I've modified rpcallowip parameter to 0.0.0.0/0 but still not working :/
If I just wait I get the following message on LND:
2023-09-28 12:37:13.820 [ERR] LTND: unable to create partial chain control: invalid http POST response (nil), method: getblockhash, id: 1, last error=Post "http://x.x.x.x:8332": dial tcp x.x.x.x:8332: connect: connection timed out
2023-09-28 12:37:13.820 [ERR] LTND: Shutting down because error in main method: error creating wallet config: unable to create partial chain control: invalid http POST response (nil), method: getblockhash, id: 1, last error=Post "http://x.x.x.x:8332": dial tcp x.x.x.x:8332: connect: connection timed out
2023-09-28 12:37:13.822 [INF] LTND: Shutdown complete
error creating wallet config: unable to create partial chain control: invalid http POST response (nil), method: getblockhash, id: 1, last error=Post "http://x.x.x.x:8332": dial tcp x.x.x.x:8332: connect: connection timed out