By Commas, Compound subjects

Hi, "Tyler Riggs is reportedly in serious condition and his passenger is in critical condition after a car wreck on Friday." Why is no comma needed after 'condition'? Is this an example of a compound subject? No. It's a compound sentence, with two independent main clauses joined by 'and'....

"Tyler Riggs is reportedly in serious condition and his passenger is in critical condition after a car wreck on Friday." Why is no comma needed after 'condition'? Is this an example of a compound subject?

<BLOCKQUOTE><table width="85%"><tr><td class="txt4"><img src="/Themes/default/images/icon-quote.gif">&nbsp;<strong>Mister Micawber wrote:</strong></td></tr><tr><td class="quoteTable"><table width="100%"><tr><td...

The are grammatically agrees with protocols. I believe that the Columbia Guide to Standard AmE addresses this problem as a problem of the 'near-compound' subject, because (to me) the commas, creating 'non-restrictive' content, are quite similar to m-dashes in their intent:'In compound like...

Fernbag wrote: I schedualed the appraisal Tuesday, and adjusted Marilyn's application Wednsday. Should there be a comma or not? Why or why not? Thanks to all! Do not use a comma to separate the paired parts in paired compound subjects or compound verbs. I schedualed the appraisal on...