Is "WITH RECURSIVE" limited to the first position of CTEs by design?

[Kirk Wolak <wolakk@xxxxxxxxx>]

Team,

  This was strange.  I wanted to set up a CTE that would FEED my recursive query.

And also feed the results filtering...

These are the most trivial examples.  The second one results in a syntax error.  Which implies that:
1) There can only be one recursive CTE at the same level?
2) It must be the FIRST CTE?

Example:

WITH RECURSIVE CTE1 AS (select 2 UNION ALL SELECT 0),
CTE2 AS (select 1 UNION ALL SELECT 0) select 3 ;

-- This does not work:

WITH CTE1 AS (select 2 UNION ALL SELECT 0),
RECURSIVE CTE2 AS (select 1 UNION ALL SELECT 0)
SELECT 3;

--> ERROR:  syntax error at or near "CTE2"

Thanks in advance...

Kirk