Create a modular 3D model of a ceremonial walkway consisting of two parallel rows of tall vertical wooden poles. Each pole resembles a natural tree trunk with bark texture and a rough finish. Between each pair of poles, suspended horizontally across the top, is a wide red fabric banner. The banners hang in gentle arcs with slight slack, as if draped, and appear made from heavy woven cloth with visible folds. Use physically based rendering (PBR) materials for realistic wood and fabric. The model should be cleanly grouped into two mesh components: one for all the wooden poles, and one for all the fabric banners. Ensure the model is exportable in .GLB format and optimized for real-time use in AR or game engines.