Bit defender Antivirus Question

[dcwttaoo1]

I Current run Bit defender as a separate program. A few Questions:

1. If I upgrade this program, do the two version work together?

2. Do they work together now?

3.A. Can I turn off the one in Spybot?
B. Or do I Have to uninstall the installed one; Bit Defender free?
C. Any issues with this?

4.A. Does the update for Spybot Auto update?
B. Does it include Antivirus updates too?

5. is the purchase an ONE year or lifetime membership?

thank you for your time.