I am seperating lengthy posts using
<!--nextpage--> but have to output user comments only around the last 'page' of the publish. I can not discover a way of counting the amount of paginated pages after which outputting if page == last page.
Any assistance is appreciated
You should check with
$wp_query->query_vars['page']. On page one, this value will not is available, whereas around the subsequent pages it will likely be set using the current page number.
$currentPage = isset($wp_query->query_vars['page']) ? (int)$wp_query->query_vars['page'] : 1;