Can a rejected manuscript be submitted to another Elsevier journal?
In general, when a paper is rejected, you can resubmit it to another journal as soon as you feel you are ready.  There is no minimum waiting time, and it doesn't matter whether both journals have the same publisher or not.

As far as I know, publishers don't generally share information about submissions between journals.  (However, it could happen that the second journal would require you to tell them about any previous places the paper has been submitted.)

In theory some publishers might have special rules, but I've never heard of this.