Are these sentences natural? Feb 1

[Musicgold]

Hi,

Are the following sentences natural to a native ear?

1. He said hi to you ( I conveyed the greetings from one friend whom I met yesterday to another friend)

2. Looks like you have got a bit of learning curve here ( I meant the person has to understand how a new software works)

3. This is a separate project than the one I mentioned earlier.

Thanks,
MG.

[Cerberus™]

[Musicgold]

Thanks.