Separating multiple tracking numbers in shipping confirmation email

How do I separate multiple tracking numbers/URL in the shipping confirmation email? If I use this code, the tracking numbers/links run together. The tracking numbers are not based on line items, but the order as a whole.

{% if fulfillment.item_count == item_count %}
{% capture email_title %}Your order is on the way{% endcapture %}
{% capture email_body %}Your tracking number is {{fulfillment.tracking_numbers}}. Please click on the link to view your delivery progress, and projected delivery date. The order should be verbally accepted on receipt.
{{fulfillment.tracking_urls}} {% endcapture %}

Your tracking number is D420926810002708722001D420926810002708722002. Please click on the link to view your delivery progress, and projected delivery date. The order should be verbally accepted on receipt. https://www.canpar.ca/en/track/TrackingAction.do?locale=en&type=0&reference=D420926810002708722001https://www.canpar.ca/en/track/TrackingAction.do?locale=en&type=0&reference=D420926810002708722002

I want it to look like this.

Your tracking number is D420926810002708722001, D420926810002708722002. Please click on the link to view your delivery progress, and projected delivery date. The order should be verbally accepted on receipt. https://www.canpar.ca/en/track/TrackingAction.do?locale=en&type=0&reference=D420926810002708722001

https://www.canpar.ca/en/track/TrackingAction.do?locale=en&type=0&reference=D420926810002708722002

Thanks,