Bob the Builder: Festival of Fun [PS2]

I am attempting to write a Blender add-on for models from the PS2 release of Bob the Builder: Festival of Fun. However, I cannot figure out how primitives are generated from the vertices. It seems to store multiple positions for each vertex for some reason. I tried generating triangle strips from one of the position fields, but I think there is more to it than that. I've attached the Blender add-on, a Python script I wrote a while ago for unpacking DATA2.BIN, and a couple of sample files. Also, here is a partial ImHex pattern for the models:

struct Vec2f {
    float x;
    float y;
} [[single_color]];

struct Vec3f {
    float x;
    float y;
    float z;
} [[single_color]];

struct Matrix {
    float row_0[4];
    float row_1[4];
    float row_2[4];
    float row_3[4];
} [[single_color]];

struct Vertex {
    Vec3f;
    float;
    Vec3f;
    float;
    Vec3f;
    float;
    Vec3f;
    u8 indices_0[4];
    Vec3f normal;
    u8 indices_1[4];
    Vec2f uv;
    u8 color[4];
    u8 indices_2[4];
} [[single_color]];

struct Mesh {
    u32 vert_count;
    u32;
    u32;
    u32;
    u32;
    u32;
    u32;
    u32;
    Vertex vertices[vert_count];
};

struct MeshInfo {
    u32 offset;
    u32;
    u32;
    u32;
    Mesh mesh @ offset;
};

struct MeshTable<T, auto MeshCount> {
    MeshInfo mesh_info_entries[MeshCount];
};

struct ModelInfo {
    u16 mesh_count;
    u16 bone_count;
    u32 mesh_table_off;
    u32 unk_off;
    u32 name_off;
    MeshTable<u32, mesh_count> mesh_table @ mesh_table_off;
};

struct Header {
    u32;
    u16 model_count;
    u16 bone_count;
    u32 models_off;
    u32 pids_off;
    u32 transforms_off;
    
    ModelInfo models[model_count] @ models_off;
    s16 pids[bone_count] @ pids_off;
    Matrix bone_transforms[bone_count] @ transforms_off;
};

Header header_at_0x00 @ 0x00;

btb_ps2_importer.zip btb_ps2_unpacker.py BTB PS2 Samples.zip