What is the longest you have gone without talking to a sibling ?

1 year. My brother treated me badly when I visited him once. I live overseas and hadn’t seen him in over a year. He was so rude to me. Yelled at me for eating something without a plate, walking on his carpet with flip flops even I was chasing my baby around everywhere trying to keep him from the basement stairs. When I left I told my mother I was never going back.
He did say sorry a year later, but only because my mother told him to make things right or he would never see me again.