Method for merging 2 ACF repeater fields then using one loop to output them

rep.php

foreach ($terms as $term) :

                            $speciality = $term->term_id;
                            $speciality_val = $speciality;

                            $args_hs = array(
                                'numberposts' => -1,
                                'post_type' => 'clinician',
                                'suppress_filters' => false,
                                'meta_key' => 'hospitals_and_specialities_UNIQUE8765678_speciality',
                                'meta_value' => $speciality,
                            );

                            // query
                            $the_query_hs = new WP_Query($args_hs);
                            $docs = $the_query_hs->posts;

                            //var_dump($docs);

                            uasort($docs, 'mainSort');

                            if ($docs): // Only show listing if it has content

                                ?>

									<tr class="heading-row">
										<td colspan="6">
											<h5 style=""><?php  echo $term->name; ?></h5>
										</td>
									</tr>

								<?php

                            endif;

                            $rep_merge = array();

                            foreach ($docs as $doc):

                                $repeater = get_field('waiting-times-for-clinics', $doc->ID);
                                $repeater_hs = get_field('hospitals_and_specialities', $doc->ID);
                                $title = get_the_title($doc->ID);
                                $link = get_permalink($doc->ID);
                                $thumbnail = get_the_post_thumbnail_url($doc->ID, 'mini-thumbnail');

                                // Merge the two repeaters
                                array_push($rep_merge, $repeater);
                                array_push($rep_merge, $repeater_hs);

                                foreach ($rep_merge[0] as $index => $row) :

                                    $now_booking = $row['now_booking'];
                                    $bookDate = DateTime::createFromFormat('Ymd', $now_booking);
                                    $waiting = $today->diff($bookDate);
                                    $interval = $waiting->format('%a') / 7;
                                    $weeks = number_format($interval, 1) + 0;

                                    $speciality_id = $rep_merge[1][$index]['speciality'];
									$hospital_id = $rep_merge[1][$index]['hospital'];
									
                                    $speciality = get_term_by('term_taxonomy_id', $speciality_id, 'taxonomies');
                                    $hospital = get_term_by('term_taxonomy_id', $hospital_id, 'taxonomies');

                                    $speciality_output = $speciality->name;
                                    $hospital_output = $hospital->name;

                                    if ($speciality->term_id == $speciality_val):
                                        ?>
										<tr class="link-element" data-link="<?php echo $link; ?>">
											<td>
											   <img src="<?php echo $thumbnail; ?>" alt="<?php echo $title; ?>">
											</td>
   
											<td data-column="CONSULTANT">
											   <a href="<?php echo $link; ?>"><?php echo $title; ?></a>
										   </td>
   
											<td data-column="SPECIALITY">
												<?php if ($speciality): echo $speciality_output; endif; ?>
										   </td>
   
											<td data-column="CLINICS AT">	
											<?php if ($hospital): echo $hospital_output; endif; ?>
										   </td>
   
										   <td data-column="N.WEEKS WAITING">
											   <?php if ($weeks > 0 || $weeks = !null): echo $weeks; endif; ?>
										   </td>
   
										   <td data-column="NOW BOOKING">
											   <?php if ($now_booking): echo date('d/m/Y', strtotime($now_booking)); endif; ?>
										   </td>
										</tr>
   
									   <?php
                                   endif;

                                endforeach;

                                $rep_merge = array(); // Empty the array

                            endforeach;

                        endforeach;