Hi Airman,
Yes! You can do that using AkrutoSync. You just need to install the AkrutoSync program on your computer that has an Outlook program. Then add your Lumia 620 and Galaxy Tab. Every time you add, edit or delete any calendar, contact, task and note items on any of those devices, the AkrutoSync will sync it to the rest of the devices.
Hope this answers your question. Feel free to try it with the free trial version!
Best regards,
Paul Suarez
Technical Support Specialist
AkrutoSync Support