<?php
global $post;
$posts = get_field( 'relationship' );
if( $posts ):

foreach( $posts as $p ):
setup_postdata( $p );

// Display the date of the event
$p_event = tribe_get_start_time ( $p->ID, 'j F à H h i' );

if ( $p_event ) {
    echo $p_event;
}
else '';
endforeach;
endif;
?>