11th house is all about Friends, elder siblings, fulfillment of wishes and desires, Gain, profit, success in the undertaking, Large organization, society/community, Achievements, etc.
2nd house is the 4th house from 11th House..let’s explore
Your gains add value to your family income..
Your family values, your speech (2nd H) , and your basic understanding of life are the reasons, you become part of society and community(11th H).
Your achievements, medals, and fulfillment of desire are the happiness for your family (2nd H)
Your savings are your second income /gain or whatever you gain from work (11th H) is the addition of your wealth ..(2nd H)
Your elder siblings (11th H) are the people who become happy when you understand/follow the family values/virtues(2nd H).