I would like to better understand the correct process when entering Class C with underlying Class D, as in the image below.
I am planning to approach from the West through the Class C and Class D airspace to enter the pattern at KBUR at approx. 1800 ft.
1. Do I first establish 2 way with KBUR at 20nm and then request a frequency change to KVNY to establish 2-way and then request another frequency change to switch back to KBUR?
2. Who should I contact first?
3. I plan to request VFR flight following/ traffic advisories, would SoCal Approach normally speak to KVNY Tower on my behalf in this 'special' situation or is that not a service provided under traffic advisories
4. Is the pilot always expected to establish 2 way on their own?
5. What happens if I have to enter from the North through the Class E, D and C?
Thanks in advance for your advice and help.
Toby