Integrating blogs between to separate WordPress websites

quick and dirty

to pull form other blogs to the ANZ site you need to do something along the lines of

// get thecurrent blog id, needed later
$original_blog_id = get_current_blog_id(); 

// get the blog you want to pull from
// https://codex.wordpress.org/Function_Reference/get_blog_id_from_url
$blog_id = get_blog_id_from_url( 'www.domain-3.uk.com' );

switch_to_blog($blog_id); // this function neeeds an int, the blog id you want to interact with

then use
//https://codex.wordpress.org/Template_Tags/get_posts
$latest_posts = get_posts($args);
or
// https://codex.wordpress.org/Function_Reference/wp_get_recent_posts
$latest_posts = wp_get_recent_posts($args );

and process though a loop routine to output

//
// !!!!IMPORTANT!!!!
//
// switch back to your original blog !!!!!!
switch_to_blog($original_blog_id);

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to get a listing of posts
you may want to gather all the posts from the different blogs into an array and sort them based on date posted before displaying them
also, if you are doing multiple sites, you just make an array of domains  and loop over it

$domains = array('www.domain-1.com', 'www.domain-2.com','www.domain-3.uk.com','www.domain-4.ca','www.domain-5.com');

foreach($domains as $domain){
	$blog_id = get_blog_id_from_url( $domain );
	// etc...
}

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