replication connection and multi-command queries

Hi,

I have a situation where I've set up a replication connection and tried to
issue a query with the simple protocol that has multiple commands "SELECT
1; SELECT 2;". I'm receiving a syntax error like this:

%{code: :syntax_error, file: "repl_scanner.l", line: "225", message:
> "syntax error", pg_code: "42601", routine: "replication_yyerror", severity:
> "ERROR", unknown: "ERROR"}

The above is formatted by the driver library I am using, but might have
some useful info.

I was curious: is it by design that replications can't use multiple
commands? I just want to make sure I'm not doing something wrong.

Thanks for your help,
Greg