How about hyperlinking to the other presentations on the relevant introductory slides. This way they will each retain their own format, but will play seamlessly and return to the original presentation (and slide) when they finish.
HP Envy x2 review: Hands-on
Iconic New York graphic designer Milton Glaser on his uplifting new subway posters
New iMac Pro release date, UK price & specs rumours
Comment suivre le parcours du père Noël ?