When a creature has multiple vulnerabilities, and is hit by an attack that deals more than one type of damage that it is vulnerable to, do the vulnerability effects combine?

Example 1: Creature is Vulnerable 5 Thunder and Vulnerable 2 Lightning. Attack deals Thunder and Lightning damage. Does the creature take 7 extra damage?

Example 2: Creature is subjected to a single effect that deals ongoing Fire and Radiant damage, while it is Vulnerable 5 All. Does the creature take 10 extra damage, when taking the ongoing damage?