'Can I omit the $and in the $match stage in Mongo's aggregate?

In $match, is there a difference in behaviour between the following with and without $and?

db.emails.aggregate([
  {
    $match : {
      $and: [
        {receivedAt: { $gte: "2021-01-01"}},
        {receivedAt: { $lt: "2022-02-01" }}
      ]
    }
  }
])

or

db.emails.aggregate([
  {
    $match : {
      receivedAt: {
        $gte: "2021-01-01",
        $lt: "2022-02-01"
      }
    }
  }
])
mongodb


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