Scenario I:
tx {
    Bean1 -> getConnection -> insert data into table -> call bean2 -> close connection
    Bean2 -> getConnection -> update above data -> close connection
}

tx {
    Bean1 -> new transaction query that data indeed got updated
}
---

Scenario II:
tx {
    Bean1 -> getConnection -> insert data into table -> close connection -> call bean2
    Bean2 -> getConnection -> update above data --> close connection
}

tx {
    Bean1 -> new transaction query that data indeed got updated
}
---

Scenario III:
tx {
    Bean1 -> getConnection:c1  -> insert data into table -> getConnection:c2
    -> insert some more data -> call bean2 -> close c1, c2
    Bean2 -> getConnection -> update above data --> close connection
}

tx {
    Bean1 -> new transaction query that data indeed got updated
}
---

Scenario IV:
tx {
    Bean1 -> getConnection:c1  -> insert data into table -> getConnection:c2
    -> insert some more data -> close c1,c2 -> call bean2
    Bean2 -> getConnection -> update above data --> close connection
}

tx {
    Bean1 -> new transaction query that data indeed got updated
}